This is a trade that won't pan out for weeks to come.
If you look at it status quo.
Barrett is an upgrade from Ausmus. He is batting cleanup, and he has alot of potential. Will he live up to it? We shall see.
Perez is pitching like a STUD, but he hasn't pitched an entire season yet.
Nunez's stock is growing b/c the Marlins are playing so well. Kile will probably start coming back to form when the Cardinals staff is healthy and he and Morris aren't trying to carry the load.
So, in my opinion, at this moment, you get the better part of this trade.
But, Fantasy baseball is a long distance run, not a sprint. So the real answer here is dependent on potential and who lives up to it.