The Bob Stoops led OU teams put RBs into the NFL. Lincoln Riley as a HC never got a RB into the NFL (unless you count Kennedy Brooks). Eric Gray got drafted this last year from OU, but he was at Tennessee prior to that and probably would’ve gotten drafted from there (or anywhere he went) regardless. But I’ll give Venables, Gray, for arguments sake.
OU doesn’t have the recent track record Campbell has when it comes to putting solid RBs into the league.
Their next best RB last year was a freshman who will probably be their starter this year.
For us, Jirehl and Eli will probably be our two main backs this year - who knows if Norton will stay healthy - then next year, Jirehl will be gone and there will be ample PT opportunities for Robinson if he comes in and is a stud like he appears to be