Say you trade Love for Pierce, I don't see how the Wolves win less games.
In basketball, I can't see "value" defined as anything other than helping your team win games/banners.
I get the "singular force" argument, but I think there's a difference between a good singular force (Dwight) and good stats on a bad team. The question shouldn't be, "Would Pierce put up better numbers on a bad team?" it should be, "Does Love have the same value on any team, good or bad?"