Because, in most cases higher setup cost means ur more effective, more damage on weapon, can take more hits cuz of higher armor, thus has a better change to score for team, and all because u have more money to use/want to use more money. Im not saying it should be alot easier to get valor with low setup, but to give it a small boost cuz for real it is harder to fight with low setup in most cases, and i dont want this to change, only to give some more room for playing with the shittier items, and we have alot of those...