theres no doubt in my mind he'll get over. He's already had experience with US fans accepting him. Granted they were smarks but anyone who sees him work is a fan of his. Its never been because he had good storylines...or because he was great on the mic. His charisma is shown in the ring. When he sets someone on top of the ropes in the corner and rolls backwards to create separation so he can run at em with a knee...the way he does a quick glance to 2 sides of the crowd before he kicks his opponent...the way he sets someone up in a corner and prances to the other side of the ring only to turn around and run at them with a knee...the way his eyes open wide and/or he starts jittering when he sees an opening for a bomaye...the way he growls in pain when he's hurt...the way he roars when he's dropping knees on someone...the way he makes a fool out of someone during a rope break...vibrating while choking someone with his boot...etc etc etc
He has the innate ability to make every move he does important which is essentially the very basis of "WWE Style". Kids and Adults alike are gonna fukkin LOVE Nakamura. And bytches are gonna want to fukk Nakamura. He might not ever have the career he had in Japan. That would be tough to do. He probably will be an upper mid carder at the very least...could be the first Japanese WWE champion...could be a household name in america if they do everything anything right.