By the numbers -- you decide

Very good post. I have often wondered the same thing. I guess you also have to factor in the salary of the 2 players. Lacy will be cheaper than Ivory.. So a lot of teams aren't going to want to give up a low round draft pick AND also have to pay a lot of money for the player. They would rather take the risk on the unproven player who has potential to be a better bargain.