Good heavens, no, no they are not.
When they are performing at poorer levels than the players who would have been performing in their place had they done nothing at all, you cannot say they won the trade, in fact they could have done absolutely nothing and be in a better spot.
I mean, come on, man, by this logic you may as well trade every minor leaguer you have for someone you know will give you major league innings now because apparently that is the only factor to winning a trade.
May gave them 7 outs tonight. We got more out of Garrett Stallings yesterday. We cannot possibly be serious here.