The trade is 100% unfair, however, it's tiltted in your favor. If you can handle ripping the guy off, then you scored a Lv. X. And Pinsir d is not useless. When Ambipom comes out this thing will murder. However if you have a consious (I rarely do) and can't handle the fact that you you burned the kid bad, trade back.
Remeber people, every card in this format is great, some are just waiting for a combo (except Blaziken ex CG :F)