In Emmit's first 10 years, he had 136 rushing TD's.
He finished his career with 164.
Jim Brown had 106 rushing TD's in 9 years, with a 5.2 ypc.
LT had 126 rushing TD's in 8 years.
If you look at a RB's total career, it's hard not to give Emmit his dues.
He was a very productive RB.
If you look at who had the biggest impact in their prime, its a much tougher call, but it would be hard to go against Jim Brown.
Guys like Campbell and Dickerson came out on fire there first 5-6 years, before wearing down.
Walter Payton had a long productive career.
He was maybe the most complete back of the group.
Had the wow factor, but probably not quite as dominating as some of the others in their prime.
Sanders was a whole different animal.
Clearly one of the most enjoyable guys to watch, not so much with power or top end speed, but those crazy hips and short bursts were amazing.
All time ankle breaker to play the game, combined with great production.
For an all time RB, I think you need to consider both how they played in their prime along with how productive there careers ended up.
1) Walter Payton -- most complete back of the greats
2) Jim Brown -- most dominating in his prime
3) Barry Sanders -- good production, game changing ability,
4) Emmit Smith -- most productive RB to play the game
After that, its hard to argue where Dickerson, Campbell, Simpson, Allen, Faulk and others should fall.
If LT has a couple more productive years and he will be up there with the best of them.
Its easy to see these guys as they start deteriorating and forget how great they once were.
Its also easy to fall in love with the greats of yesteryear and forget about how they fell apart at the end of their careers.