Yeah, I think the argument here boils down to process. If you're taking a RB high in the first round, it better be a generational type talent like Barkley or Henry. The excess value provided by those guys far outweighs what you might get from another position. OO's comparison to a relief pitcher works really well. They're kinda fungible until you get to the tippy top of the heap and then you've got an incredibly valuable resource, but there just aren't many out there.