The reason the Gojira suit is so impressive is that it's like nothing seen in nature. Even the Japanese name "Gojira" literally means something like "Gorilla Whale", highlighting the unknown nature of the beast. The movies try to gloss this over by pointing to Dinosaurs (the 2000's G vs. King G had Godzilla as a mutated T Rex!) but that monster rearing its' head over the hilltop in Gojira is something primal, terrifying and new. The original film makers designed a creature that was the product of the Atomic Age, with scarred, scabrous skin, those dorsal spines, and most of all the fierce expression on his face.
Even when Godzilla became a kidee superhero he had a unique look. You just know there weren't any Dinosaurs like this running around, ever.
The 98 Godzilla is literally just a big Iquana, period. The only menace in the Emmerich film comes from the incompetent military constantly blowing shit up because they can't aim, and "Godzilla In Name Only" somehow laying a billion eggs without getting pregnant.
Nope, I think Toho had the best and Final word on the relative merits of the Japanese and American Godzilla's: