In terms of its impact on later works - as well as being an almost universal cultural icon - Honda’s 1954 film ‘Gojira’ certainly left its mark, no doubt about that.
Box-office wise? Probably not so much, but 60 years later, the Big Green Lizard is still with us.
So is every other of the big 50's monsters: Vampires, Frankenstien, Wolfman, zombies, etc. etc. And for every Godzilla movie there's been well over a dozen vampire movies. It think giant lizards peaked with "Godzilla vs. the Smog Monster". The shark had been jumped.
The Raymond Burr scenes were spliced in later, for the 1956 re-release to the US.