Hey, here's a match up I wonder if anyone else besides me while I was high ever thought of. You probably did, but hey, what a fight this one would be right?
And it's not like Godzilla's not used to fight monsters similar in size and abilities, so how would a fight between him and one of Marvel Comics' oldest and most famous monsters look like?
Well for one, let's compare their abilities and size.
I had to look up Fin Fang Foom's abilities and powers since I wasn't sure what they all were, but here they all are:
Supersonic flight via wings
Regenerative healing factor
Acid mist breath
Possesses advanced alien technology
And here's all of Godzilla's:
Now, lets compare their sizes.
Fin Fang Foom's height and weight vary. Like a lot due to him being a shape-shifter, so it's hard to measure, so let's say, but comicvine.com lists him as about 32' tall, and weighing about 20 tons.
Godzilla is a bit difficult to gauge considering the various representations of him in movies, TV shows, and other media. So we'll have to arrive at a combined average.
To get the average sum of his combined height figures, we add em' all up and divide by the number of figures given. The average sum of his combined heights statistics places at 88.18933333333333 or about 88.189 meters tall.
To get his average weight you do the same thing and after adding the sum of all his various weights and dividing by the total different numbers, his average weight works out to be about 41312.5 metric tons, or about 42,000 metric tons.