Shin Gojira V Showa Kaiju part 1

Well MechaGodzilla's barrier can block the Showa Godzilla's atomic breath which is the weakest. Shin's rays cut through building like nothing. MechaGodzilla's artillery is strong and deadly still yet Shin's size is an advantage and a disadvantage too. He could crush MechaGodzilla yet his size makes him slow. So MG can escape. But judging how Shin moves his head when using his atomic breath he may destroy him. Even if MG were to fly, Shin may get him. As for Titano well he would die too soon. Gigan would hurt him a bit but as i said, Shin swipes his head swiftly while using his ray. As for Megalon, you said it yourself he can't use his weapons that good.

But using that much energy would exhaust Shin. Yet he well would make a light show...that means he will use his tail atomic breath, his mouth atomic breath and his back atomic breaths. So it's 4 birds 1 stone. It will exhaust him but with his agility while using atomic breath he will get them.

But that's my analysis and opinion! Also nethdaniel this is a fun topic thanks for sharing this!

Gotta go with Shin Gojira. He has a massive size advantage, and the only monster that could really do anything to him is MechaGodzilla.

Showa Godzilla basically managed to 1v2 Gigan and Megalon and won for the most part. Titanosaurus also doesn't really bring anything to the table in terms of taking him down since his tail fin wouldn't likely be able to even offbalance Shin, and he doesn't have the size advantage he did in Terror of Mechagodzilla.