Sorry, but this is such a load of garbage. Put any decent B1G back behind Iowa's line and hand him the ball the amount of times Iowa hands him the ball and he is going to perform as well as Iowa's backs have performed during Erb's tenure.
With the exception of Greene, who was coached more by Jackson than Erb, these guys haven't been that great. And yes, that even means Coker. Of the top ten rushers in the conference only one TMart had a lower YPC than Coker. Also he got all the carries and powered the Hawks to the worst rushing offense in the conference. Beyond Coker, you have ARob, who again benefitted by getting all the carries, but still had BY FAR the lowest YPC of any B1G top ten yardage back. No way that dude sniffs another starting position in the conference, neither does Wegher come close.
Give Ball that many carries behind those Iowa lines and he is still running, or Royster, or Burkhead, or Redd, or Bell, or Toussaint, or Herron, or White, or LeShore, or Clay... Seriously dude, Iowa has succeeded despite their backs over the last few years, not because of them.