Godzilla '68's fighting style is the way it was because he was portrayed by Nakajima, and the Godzilla's from '73'-'75 were portrayed by three different actors...Time has nothing to do with any of it. As fans, we just need to ignore the fact that the films after DAM take place before it, chronologically.
I don't even understand the comparison to begin with. We know nothing about Godzilla in GODZILLA 2000, other than he's attacked Japan at least once before. Making crazy fan assumptions about his "power" is....well, just pointless, really. Additionally: Who cares?
Kiryu2012 wrote:Most likely 99 Godzilla is Minya grown up, and the previous Godzilla died of old age.
I doubt the 24 years between TERROR OF MECAHGODZILLA and DESTROY ALL MONSTERS were enough for Godzilla to "die of old age". Even then, where would the other Minya have come from?