>>23372642
>Ultraman and Sentai are still the same even after they started branching out globally.
Only if by "globaly" you mean "SEA and China".
Ultraman hasn't hit big in the West, it just became more accesible to the preexisting crowd.
Sentai isn't even out of Asia.

Rider COULD be the exception because its concept is more friendly to a potential western audience. I personally don't think it will be a huge sucess either, but I understand where the fear comes from.