Emmitt is the better back no questions asked IMHO. Comparing him and Barry is like comparing a real QB to Michael Vick. Vick is flashy, immensly talented and electric to watch. But if you need to win a game who do you want? Vick or Brady? Vick or Manning? Vick or Aikman?
If you picked Vick in any of those instances you like flash over substance.
Emmitt was great on all three downs. Barry was not because he couldn't or didn't want to block.
Emmitt was a threat from any where on the field. Barry was taken out at the goal line. The greatest RB of all-time would have been his team's best option at the goal line, don't you think?
Emmitt made his team better. Barry did not. The mighty 93 Cowboys, coming off their first Super Bowl, went 0-2 without Emmitt. Barry's team went 5-11 his last year. He quit, a la Ricky Williams and his team went 8-8. Hmm? Doesn't seem like a team that unexpectedly lost the greatest RB of all-time would improve by three games.
Emmitt didn't quit on his team. Barry didn't have the heart to play anymore for a bad team. Emmitt went from a bad team to a horrible team. Emmitt just loved to play the game.
Emmitt is the greatest running back of all-time. Barry was the flashiest, most exciting running back of all-time. There is a big difference here. If flash and excitment are the indicators of greatness then Michael Vick is the greatest QB ever. Way better than Montana or Marino or anybody else you want to throw into the mix. Vick has proven over the last 3 years what a difference he makes to his team's record. So he must be a great QB, right? Vick makes his team better because he is a threat, not because he is a great QB.
My apologies to Jim Brown fans. I am only 30, so I can't speak of Jim Brown with any true knowledge. I group him before the modern era. He was bigger than many of the lineman and linebackers of his day. The game was so much slower and weaker than today's game. Apples to oranges. To be fair, maybe I should say that Emmitt was the greatest RB of his era since I'm not really qualified to compare Emmitt and Jim Brown.
If anybody could challenge Emmitt for the throne of the modern era it certainly wasn't Barry. If anybody was better all around than Emmitt it was Walter Payton.