Guy's apparently way bigger than Sin Cara ever was and an incredible wrestler who can adapt to any style of wrestling. As long as his mic work isn't bad he should do well.
Okay, so I just checked this guy out on Youtube. He's going nowhere in WWE. Athletically talented for sure, but he has no personality and isn't visually striking. He'll get some "Ooh's" and "Aww's" for some neat moves early on, and that'll be it. I'm not trying to discredit him too much, but it's a whole different ball game in America. Being a great technical wrestler only takes you so far. He'll get a ton of respect from the hardcore/internet fans, and that's about it.
On another note. this whole Rusev/Swagger feud is gaining some serious heat. It might be cheap heat, but it is working wonders. I loved how Lana got physical. That's what managers should be all about. Helping their guy win at any cost. Great for Swagger too. I can't remember the last time people gave this much of a shit about anything this guy was involved in.