The only draft boards that matter are the ones for the actual teams.. you have absolutely no idea where Manuel would end up if the Bills didn't take him where they did. The Eagles, Browns, Cards, Jets all would have been able to pick him ahead of the Bills in RD2...
He was their highest rated QB so why risk not getting him, you never know what other teams are going to do to move ahead of you and pick players they want.
I think you are senile. The is not what the Bills would have done in the past.