Around Minorleagueball, there seems to be a pretty strong opinion that Baneulos and Betances are very close, with some giving Betances the edge and more giving it to Banuelos, but often by a small margin. However, there is one big difference between the two players... Betances is 24, Banuelos is 21. The difference in projection for the two of them is pretty clear...Betances has a much worse bet of improving his control, and Banuelos was playing at a high level for his age. He didn't wow as much as he did last year, but he has also moved through the system quickly after his breakthrough, much faster than Betances.
People give Perez a pass when his struggles have been much more pronounced at higher levels, but I think there's a bit of a Yankee-hype backlash going around here, focusing more on what he didn't do than what he did do in his age 20 season. He still held his own with a decent K rate and good GB tendencies, which will play well in Yankee Stadium. With another year in Triple-A to work on his stuff, I think there's a very real chance he gets to focus more on controlling his stuff and refining his secondary stuff to become a #2 or #3 starter with Latos-like upside.
I haven't read MLB.com or PP's justification for the Banuelos ranking, just trying to figure if they are seeing something that we are not. And for the record, I'm a Red Sox fan.