>>57220098Depends, are we considering "Arceus" to be the fragment you get in-game or the actual Creator God itself? The latter would likely be immeasurably powerful but I'd imagine the fragment, whilst incredibly powerful, would still be bested due to the lack of a specialized stat without Nature/IV fuckery.
I reckon going off of canon abilities, Mewtwo wouldn't be able to best outright broken shit like timehax/actual space itself being cut or altered but anything else that isn't outright altering matter or space-time continuum alteration/manipulation would be fucked.
U-Necro has a very solid case considering it not only has a body that's surface exceeds the temperature of the surface of the sun but is also incredibly powerful and can absorb light and make it it's power source. I feel like Necro has too many things working in it's favor for the comparatively more grounded Mewtwo.
Mewtwo can strengthmog most other Mon.