To answer the titled question... Of course Dallas can win a SB with a RB committee approach. Its only been proven several times over the last decade. Hell, the Patriots didn't even have a RB over 500 yards! So I just shake my head when I hear all the talk about how important Murray is...Its the commitment to the run game (not Murray) that's important. I didn't hear all these folks clamoring about how vital Murray was this time last year. No, Murray took advantage of his opportunity as he should have during a contract season. I keep hearing how Murray is the one that made Dallas last year.. oh yeah, so what about the seasons before last year? People purposely over look all the help Murray had to obtain his Rushing Title. Its kinda like how a lot of folks still don't consider Romo elite, although he holds multiple records, was the top rated Qb, and is top five alltime! My point is.. please, lets not act like Murray is anything remotely close to a "Emmitt" like RB. Yes, Murray had a good year, but he also had the best rated QB in the league, the best rated OL in the league, arguably the best WR in the league, the best overall TE in the league, and a team committed to finally run the ball. Oh, and did I mention it was a contract year. Amazing isn't it, how players have "breakout" season when they know they're about to get paid. Fact is, any RB in the league knows that blocking up front is the only way to have a opportunity to be successful. This is exactly why FA RB's have been basically begging the Cowboys to give them a chance.
I'm not trying to take anything away from Murray bc I always felt like he had the skillset to lead the league, but I'm tired of people acting like Dallas is doomed without him. If Murray was in McFadden's shoes in Oakland.. well, I'd be willing to bet he would have struggled too. Opportunity is the name of the game. And like proven last year, defense wins championships. In my opinion, the FO did a hell of a job this off season and on "paper" we look to be a top notch defense. The Combo of McFadden, Randle, Williams, and the forgotten Dunbar are easily talented enough to win a SB. The real question is... Is our defense improved enough to stop guys like Aaron Rodgers in the playoffs?