@MightyChroniclesUran well it's minus one all the way, I mean Zilla would get in a few good hit's and would put up a decent fight for minus one goji. His power breath would put minor burns on minus one but nothing that he can't handle.
But minus one on the other hand would just regenerate all of those injuries in an instant, no delays, no setbacks, nothing. Not to mention his atomic breath is an actual nuke.
Not to mention how heavy he is, that dude gets a hold on Zilla then it's over cause as far as I can see minus one would throw him around like a ragdoll.