Dennis Simmons is facing a situation that many face at some point in their career. He knows the new OC at OU, just like he knows the HC at WSU. The new opportunity will probably pay more. The staff responsibility level will be similar, though he might get some sort of better sounding title. The pressure will be greater at OU, not just because of alum/admin expectations, but also because Stoops had to whack several people to save himself this year. The new position is at a school with a bigger football tradition, which in some ways is more attractive for an ambitious young ass't coach. The risk/reward situation at OU is definitely much bigger...to be viewed as part of a successful turnaround at OU would pay dividends, but if the turnaround doesn't happen, it will be a blow to his future prospects. To be part of the turnaround at WSU will also pay dividends, but probably it would be a longer term career strategy, as opposed to being at OU for a couple of years and at that point either getting axed with the entire staff or being part of a resurgence.
Lots of things to consider. I hope he makes a good decision.