Green Bay and Seattle. Seattle and Green Bay. and . Cheeseheads and 12's ...If you've been paying attention to the NFL offseason and how people are speculating about the league's top teams, you've probably learned by now that most think the and are the two best clubs in pro football. Sometimes the -- depending on how you like their running back committee -- get lumped in. Or the . But what of the AFC?Is there really a team in that other conference that could be seen as a favorite to win the Lombardi Trophy? Does any team have the feel of the and ? Don't get me wrong, , Frank Jackson Jersey and I'm sticking with it. But I'm not picking them to win it all.It feels like the AFC is a mosh pit of good teams. After discu sing this with my editor, I thought it would be a good idea to identify a major weakne s for each squad, then arrange the conference into tiers. Below you'll find the pecking order in the AFC, with the Achilles' heel -- that flaw that keeps even the best of the AFC teams from being seen as equal to the or -- listed for each club.As always, feel free to share your take ... is the place.TOP-SHELF CONTENDERSThese three clubs would seem to be a hair above the others, thanks largely to their quarterbacks -- but even they've got problems.New England PatriotsAchilles' heel: Secondary. You thought I would say "reputation," right? Talent isn't totally absent in the defensive backfield; is , after all. But with , and gone, is there enough in the back end to win the again? might , but the fact is, he's an undrafted free agent who didn't start last year -- whether or not he made . At least this team will have an us-against-the-world mentality.Indianapolis ColtsAchilles' heel: Front seven, specifically the run defense. Sure, Indy added , and should be back at full health after . Eric Bledsoe Jersey But both those players are well over 30, and neither is expected to be a force in run support. Signees and , meanwhile, didn't exactly generate high demand on the open market, and inside linebacker will turn 32 in September. The ran wild on these guys last season (246 rushing yards in , 177 in ), deflated footballs or no. It would have been nice for Indy to use the 29th overall pick on a nose tackle to rotate with , rather than another receiver in .Denver BroncosAchilles' heel: Offensive line. Even before was with a torn ACL, league observers were worried about breaking down. Now, with Clady out, and , Denver has a clear lack of quality veteran starters up front. This, in theory, means more hits for Manning. More hits could lead to his body breaking down sooner, which means we could see more throws like we saw in the playoffs. Let's hope and can have the best years of their respective careers.SECOND TIERThis next group includes a bunch of teams that all have a decent shot at surviving the AFC tournament, but when it comes to challenging for a Lombardi Trophy, they're a rung below the top-shelf teams -- and two rungs below the NFC elite.Cincinnati BengalsAchilles' heel: Getting over the mental hump. OK, OK; we could easily list quarterback. But here's a news flash: is not the only Bengal who has faltered in big games. The defense stunk last year. The whole offense was mi sing in the playoffs. No, -- both mi sed the lo s to Indy. The bottom line is, making four straight first-round exits -- against the , , and -- is a good indicator that a team runs up against some mental barriers when facing higher-level competition.Pittsburgh SteelersAchilles Anthony Davis Jersey ' heel: Secondary. Of all the second-tier teams, Pittsburgh is the most set at quarterback and with regard to the overall pa sing game. But can the stop the pa s? The secondary was often woeful last season. Even if he wasn't wonderful in coverage the last few years, will be mi sed. , meaning the pa s rush will be hard-pre sed to compensate for the DBs (this is where first-rounder could come in handy). As for the draft, it's no accident Pittsburgh selected defensive backs in the second, fourth and seventh rounds.Kansas City ChiefsAchilles' Heel: Run defense. Kansas City last season, which was a sizable factor in the club mi sing out on the playoffs after showing so much promise in Andy Reid's first campaign in charge. fans will point to the Achilles injuries that knocked out and . And they were mi sed. But how much longer can Kansas City count on them being around? Neither player is a spring chicken; the 30-year-old DeVito is entering Year 9, while the 32-year-old Johnson is entering Year 11. The team has to figure out better ways to spell nose tackle , who can wear down after being on the field too long. The receiving corps might not be perfect, but with the signing of , it is better.San Diego ChargersAchilles' heel: Offensive line. Line play, specifically with regard to the ground attack, was in absolute shambles last year. First and foremost, depth was a problem; every center the Bolts lined up got hurt. Even when people were healthy, matters up front where no bueno for a team that finished while picking up a paltry 3.4 yards per carry. The did snag in free agency before drafting . Those guys must play well early to take pre sure off both quarterback and a defense that has upside.Baltimore RavensAchilles' heel: Pa sing attack. is better than people realize, but I didn't include him when , mostly due to his supporting cast. The will be starting Jrue Holiday Jersey a 36-year old wideout in and, potentially, two rookies in receiver and tight end . This could be problematic, given that Flacco's middle-of-the-pack pa ser rating (91.0) last season was the second-highest of his career. Of course, pa ser rating is merely one facet of the game; another is two-minute offense, where, unfortunately for the , they were terrible last season (ranking 28th in two-minute scoring). Baltimore is destined to play tight contests in the AFC North, so relying on young receivers -- who might not know what they're doing, pre-snap -- in crunch time could spell trouble.Miami DolphinsAchilles' heel: Interior offensive line. fans are often quick to circle the linebacking corps as a concern, but the signing of highly coveted defensive tackle could mitigate that i sue. As for the O-line? Yeah, not so much. has been sacked over 100 times during the last two seasons. after filling in at guard last season (during which he played well below his usual standard). . . Some of the guards to choose from: (who barely played in 2014), (who did not fare well at guard), or rookie (a Day 3 pick).THE HEADLESS HORSEMENThere are three outfits in the AFC that could take on anybody -- provided it would involve going 21 on 21. Unfortunately, these teams scuffle when you throw in the quarterback. The , and are all capable of grabbing a wild-card berth, if not taking their divisions. But we're talking about winning the here, Zion Williamson Jersey which nece sitates having a franchise quarterback, save for the occasional Brad Johnson -- and I'm not sure any of these teams even have anyone on par with him.The are arguably best off in that department, with having tremendous upside and free-agent signee showing promise early last season in Cleveland. Meanwhile, the carry the most talented roster, but while Rex Ryan seems to think he has three quarterbacks, I'm afraid Buffalo doesn't have one capable of mounting a serious title run. The are officially in hope mode with , although they do have a defense poised to supplant Seattle's as the best in the NFL.A YEAR (... OR TWO ... OR THREE ...) AWAYThe , , and simply don't have the horses to compete for the . Of the group, Jacksonville had the best shot of getting into the postseason ... before . Sure would be nice to see Cleveland or Oakland playing meaningful football in January. 2002 -- the last year the or made the playoffs -- sure seems like a long time ago. Because it was.Follow Elliot Harrison on Twitter .