Forty-nine s have been played thus far -- and six teams have won 57 percent of them.Yes, life has been good for the (six titles), (five), (five), (four), (four) and (four) in the era. Of course, the flip side of so many titles going to so few teams is that a fair number of franchises have experienced more than their share of bum luck -- specifically, the 13 organizations that have never won a .But hope springs eternal, especially in July. So I thought I'd a se s the 13 title-le s teams and rank them according to their chances of finally capturing that elusive Lombardi Trophy next February. The resulting list is presented below, with teams grouped in tiers.THIS COULD BE THE YEAR1) Arizona CardinalsLast season, was limited to just six games by a shoulder i sue and -- and the still won 11, making the playoffs for the first time since 2009. With Palmer healthy and ready for 2015, the Cards have the best shot of the bunch to break into the winners' circle. Another factor working in Arizona's favor: the presence of Bruce Arians, who is so good, he might be one of the most underrated coaches in the league even after winning the Coach of the Year award for the second time in three seasons.2) Cincinnati BengalsThe are probably the deepest of the teams on this list. Cincinnati's offense, led by receiver and back , will be boosted by healthy returns from and , while former Bengal rejoined the talented defense after a year in Tampa Bay. This squad features a lot of good, young players -- including quarterback , Jake Tonges Jersey who, yes, I think is capable of winning a playoff game, his 0-4 lifetime record notwithstanding. The AFC North is tough, but coach Marvin Lewis can get Cincinnati, which should be competitive for a while, over the postseason hump.3) Philadelphia EaglesChip Kelly is a sharp guy who could make the auspicious start to his NFL head-coaching career truly special by capturing a title in Year 3. Yes, Philly traded away a 1,300-yard rusher in and let a solid receiver in walk in free agency, but I think 1,800-yard back and promising rookie will keep the offense rolling. The ' defense, meanwhile, should be much improved with the additions of , and . Furthermore, if new quarterback can stay healthy, which has always been the biggest question with him, he can have a huge impact. The bottom line is, Kelly knows what he's doing.IT'S POSSIBLE -- BUT NOT PROBABLE4) San Diego ChargersWhen talking chances, the quarterback position is obviously crucial, and is capable of putting San Diego in great position. Of course, since this is the final year of Rivers' current contract, this might be the last, best shot for the Bolts for some time. The offense is better with rookie running back onboard, and San Diego -- which finished 9-7 the past two seasons -- has a shot to win the AFC West. But how much will hurt? And how much of an impact will the distraction of a potential move to Los Angeles have on the team?5) Minnesota Vikings means everything to the . Some questions about the left tackle position -- where struggled last season -- aside, Minnesota has the supporting cast in place on offense to thrive with Peterson back on the field, between a solid young quarterback (), a receiving corps with explosive potential and a talented defense on George Odum Jersey the rise. Moreover, this is a well-coached squad; head coach Mike Zimmer is as good as any defensive mind in the NFL.6) Detroit LionsThe have plenty of offensive firepower, with big-armed quarterback throwing to and , and they had one of the best defenses in the NFL last year, and . Losing to free agency hurt, but Detroit still has defensive coordinator Teryl Austin on staff. If the team manages to overcome the defection of Suh and make something happen in 2015, I would not be the least bit surprised to see Austin land a head-coaching gig by 2016. Of course, the have the same problem as the : dealing with the in the NFC North.A QUARTERBACK AWAY7) Buffalo BillsIf they hadn't fumbled awayto the , the could have been 10-6 in 2014. The defense (which posted and a turnover differential of plus-seven last season) is top-notch. The offense, which has a number of skilled receivers, should only be better with carrying the ball. New coach Rex Ryan can get a lot out of his players in his own way; he's a font of perpetual enthusiasm. But who's going to play quarterback?8) Houston Texans makes Houston a defensive dynamo, and if veteran back can stay healthy, this team will run the ball well. Coach Bill O'Brien does a heckuva job -- but unle s he can play quarterback himself, I don't see the getting very close to the ultimate goal.BOTTOM OF THE PILENote: These teams are listed in alphabetical order.: Dan Quinn will prove to be a very good head coach someday, but the don't have the players right now to play defense like he wants to.: The have made the playoffs the past two seasons, but they also had a losing record last year. I don't see them breaking away from the middle of the pack in 2015.: The defense will be competitive, but it's hard to move the ball without a quarterback or receivers.: needs to grow a bit more before they can really enter the picture.: It appears in 2014 will be starting a rookie quarterback -- not a recipe for instant succe s.Follow Gil Brandt on Twitter __.