So KENTA has officially signed with WWE, and will be starting off in NXT.
Japanese wrestlers haven't had a good time of it in recent times in WWE. Yoshi Tatsu never made it past lower mid-card, Sakamoto never amounted to anything, and neither did Jiro (both from the Kaientai Dojo). Tajiri was the last Japanese star to make a mark in WWE, and even then, he was never a top tier superstar.
So with that in mind, will KENTA (or whatever name WWE bestows upon him) succeed where others have failed, and make it to that top level in WWE? His skill is not in question, it's whether or not he can make a connection with the American audience I think.
Despite him starting in NXT, I wouldn't think it'll be long before he's on the main roster, given that he's 33.