User blog comment:God of godzilla/Showa Godzilla vs Showa Gamera vs Showa Ultraman/@comment-4851119-20140614160655

Given the provision of a nuclear power plant, I'm going to vote for Godzilla. The others may have power-up sources as well but Godzilla tends to be VERY powerful after acquiring nuclear energy.

I have to say I think Gamera would come second if he uses his healing coma at the right time.

Poor old Ultraman...