Funny that roughly zero people were in favor of trading any of the big 4 for any pitcher not named Sale or Quintana in the pitching targets thread yet suddenly Pomeranz is easily worth Espinoza just because the trade has been completed.
I hear you, but a) the trade market is hard to get a handle on, and we learn a little about the relative value of different kinds of assets with each transaction, and b) I wonder what Quintana's career looks like if he's dealt at 22 to Colorado instead of becoming a minor league FA after losing a year of development to a PED suspension like Quintana.
Quintana's been more consistent since promotion, obviously, but by that same token, he's certainly never thrown a half-season as good as Pomeranz just did.
Pomeranz has basically been good to great except when pitching for the Rockies. Each season as a Rocky (?), he gave up 10+ H/9, and, well, that's a hard way to win. He's suppressed hits impressively in Oakland and SD. He was a much more heralded prospect than Quintana, mostly because he had been an NCAA standout and #5 pick, and he made great progress through the Indians' system.
I don't think people are acknowledging that Pomeranz is basically having Steven Wright's season, but without the Knuckleballer's portion of unearned runs. I was skeptical about Pomeranz when I started the Pitching Targets thread, because it was mid-May, and his sub-2 ERA didn't exactly pair well with his 4+ BB/9 rate and low BABIP. Well, the ERA's come up a touch, but the walk rate has come down a lot. He looks much less like a BABIP fluke a few months out. Of course, if we're dealing a prospect like Espinoza, we want a sure thing back, and he isn't that.