I hate disagreeing with the Legend, but this is one where we just see it very differently.
Fletcher is a really good football player. There's no narrative. He averages 5.7 YPC, dominates in short-yardage, blocks, and batters the opponent. He's a big piece of our #1 offense, and he should be. He's not a franchise back like Edge or McGahee, but I don't see many people making those comps.
I agree Lyle is the best runner, and has more upside overall. Next year, my guess is that Martinez's carries go to Lyle and he forms a great 1-2 punch with Fletcher. I also wouldn't be surprised if Girard Pringle plays a change-of-pace role early in his career (similar to Lyle this season).