Napoles for me, you're not going to outbox him on the outside working predominantly off the jab, well more importantly i don't see Cervantes doing it.
Although not alot of footage exists of Napoles at 140, it's safe to say that he is a vicious powerhouse at the weight...I like Napoles and by a stoppage in 6-8 rds. Cervantes would continually be backed up in exchanges, and he doesn't have a good reverse gear...
Cervantes, as much as I respect him, would look worse than Curtis Cokes did after his two bouts with Mantequilla.
Kinda of the way I'm seeing it...and I like Cervantes too. I think he would edge Carlos Ortiz at the weight.