
My take on this debate (Mahoraga vs 50 viltrumites)
I think the answer is simple. Mahoraga wins more often than not.
addressing the main arguments brought up:
"Viltrumites have far greater output than the attacks that destroyed mahoraga (sukuna's fuga and gojo's purple"
that's true but the difference is that Sukuna's fuga and Gojo's hollow purple nuke both had properties that completely destroyed mahoraga's body.
In the Invincible series there's zero instance of a viltrumite's attacks completely destroying the body of an opponent. which is a problem for them, because mahoraga can regenerate if even a small sliver of flesh remains.
"They can throw him into the sun"
Yet again this is true and honestly i could see this being a path of victory for the viltrumites. however, it really depends on when they decide to do this/when they figure out their attacks are becoming less effective. if they figure it out too late then mahoraga should have already adapted to their speed, and at that point the viltrumites lose.