The trade is equal yeah except my players are both playing and Drummond isn't :P
Dude, if you had made that trade with a playoff team, it might have been a 60/40 at best. MAYBE. With a non playoff team it's just a joke. Be realistic!
As far as fantasy terms Gasol, Gortat were both considered done for the year. Possibly they might get back to play a few games in the playoffs but that's not a guarantee. You can't justify that trade as being fair.