McCallum..Dont know if he would stop him or not as I really dont know alot about Nino except his record but im very familiar with Mike having followed him the first time I saw him on tv. Mike has always impressed me and I have a very high opinion of him.
Nino fought a unforgettable trilogy with Emile at 154 with their first fight Ring Fight of the Year. However Mike had no weakness and was the complete fighter . Mike is step up for Nino . Mike on pts.
I think I might go with McCallum over anyone ever at 154...except Hearns and that one's kind of a tossup.