Well, when you think about it, at his SMALLEST, Godzilla was two-thirds larger than King Kong. At his LARGEST, during the '90's, he was so big Kong would have only come up to his shin, if that.
Toho had to "grow" Kong for KKvs.G back in the '60s.
I wish the admins wouldn't have banished this thread to "Chat." We might have picked up a few more posters who are closet Godzila fans.