I know I'll probably be shot for this, but I regret to say that, as much as I like Boba, to be honest, I really think that Godzilla would totally kick Boba's butt, Japanese army or no. However, If Boba teamed up with Godzilla's archnemesis, King Ghidorah, (who you may have heard of, for those of you who haven't, he is a giant three headed space dragon with a bad attitude), then the outcome might be different.
{MW} SF
Boba: Lord Vader, I bring good news.--Vader: You have captured Solo?--Boba: No.--Vader: Then what is it?--Boba: I just saved 15% on starship insurance by switching to Geiko! {MW}