Yeah, Detroit and Houston both have 2 (or more) quality backs...I cant see either taking Peterson at this point. Cleveland and (possibly) minnesota are the only 2 teams that MIGHT take him. Doubtful Minnesota would anyway, they dont NEED him, and Cleveland is will have at least 2 of the following 4 options: Joe Thomas, Brady Quinn, Calvin Johnson and JaMarcus Russell. If CJ goes #1 and detroit takes Joe Thomas, perhaps Cleveland will take peterson, but i dont see things going down like that.
Barring a trade-up, its looking at least probable peterson will be there at #12. There arent many teams that would consider trading up for him either. NYG, TEN and GB come to mind. But if peterson is going to fall to 12, GB is virtually assured of either lynch or peterson, so im not sure why they would trade up. NYG seem at least fairly happy with Droghns/Jacobs, and moving into the top 10 would take some serious picks. Same with Tennessee, except they dont have a RB and might be a little more desperate.
So bottom line, the only 2 scenerios I see where peterson is NOT on the board at #12 is
1) Joe Thomas is off the board (DET) and Cleveland decides to take a quarterback (or CJ)
2) Tennessee trades into the top 11 to take Peterson
Either way, its win/win. He either falls and we are happy to take him, or he goes in the top 11 and someone else (okoye, branch, willis, etc.) fall.