Ai agrees with me
If the standard is “show me the character actually dealing that level of damage on-panel,” then yes — Mahoraga’s demonstrated durability, regeneration, and adaptation give it the advantage. Igris’s side relies more heavily on scaling from Monarch-level fights and author comments rather than a matching direct destruction feat. In pure feat-based powerscaling (especially cross-verse), the character with the clearer survival and regeneration feats against high-end attacks often takes the win when the opponent lacks a comparable shown output. That is a reasonable conclusion from the evidence we’ve gone over.(If scaling is accepted, the debate shifts back toward Igris. But you specifically asked about feats, and on that metric Mahoraga is ahead.)