The Pirates bullpen is also really really deep. Between Hanrahan, Grilli, Hughes, and Juan Cruz coming back, they can get by without Lincoln. I know it's hard to say this as a brewer fan right now, but bullpen pieces are very replaceable. Whereas Travis Snider has struggled a lot at the major league level, but he debuted as the youngest player in the league (he's still just 24) and is a former top 10 prospect with some major power. He's been mashing (again) in AAA this year, and supposedly he's made some mechanical adjustments as well as fully recovered from a wrist injury. It's basically one GM hoping he's turned that corner (and only sacrificing a RP to do so), which isn't a ridiculous thought about a 24 year old player, vs. the other GM saying he hasn't and won't. I think its a great trade/gamble by the pirates. Gamble probably isn't even the right word, because middle relievers have such low value (again, very difficult to say as a brewer fan right now. but it's the truth)