Cain really looked good in his debut match, but it was a six man tag and he didn't have to do things like sell or tell a story by himself.
Ronda first appeared in Royal Rumble and only had a match like 4 months later after much pro wrestling training. Is Cain doing the same? If so, and proves to be at least good, then it's okay. People like Roman, Bryan, Lesnar and Braun can have good matches with him.
Not sure he's getting a Ronda-like push, which would be good for all parties involved.