Not with the difference in yards per carry being what it is.
Henry through 10 games:
240 att, 1458 yds, 6.1 ypc, 19 TD
Walker III through 10:
228 att, 1483 yds, 6.5 ypc, 17 TD
Basically the same.
Now, we don't know what MSU is going to do with his usage for the rest of the year, but I doubt it's what Bama did with Henry:
146 att, 693 yds, 4.7 ypc, 7 TD
That's 36.5 carries per game in his last 4 games - their most important games. His yards per carry absolutely suffered from this usage, but no other RB would be tasked to do it.
Evidence - the first game vs Auburn, it worked out okay, 46 carries @ 5.9 ypc. But a drop to 4.3 vs Florida (44 carries), 3.8 vs MSU (20 carries0, then 4.4 vs Clemson (36 carries).
Tons of carries vs very good defenses and they rode him because it was their best strategy to win.
I'd be willing to bet a dollar that Walker III doesn't average 36.5 carries in MSU's final 4 games.