Well I'm not saying Mario with just Cutout itself would be Low 1-C, no. Mario with the ability himself has no feats to suggest he can affect the plane he's in. So him with cutout would probably be Unknown
I'm saying the Void would have destroyed this higher dimensional world. If you aren't aware, the Void from Super Paper Mario was basically going to destroy all of existence within the Marioverse. All worlds, all dimensions, all of existence. So it's not that Cutout scales to the tier, it's more so that the Void does. The Void was created by the Chaos Heart, which was used by Dimentio at the end of the game to defeat Mario and his friends. And the only way they could beat him is via the Pure Hearts.
I would love to discuss how it works for you if you're still confused about it.
I'm saying the Void would have destroyed this higher dimensional world. If you aren't aware, the Void from Super Paper Mario was basically going to destroy all of existence within the Marioverse. All worlds, all dimensions, all of existence. So it's not that Cutout scales to the tier, it's more so that the Void does. The Void was created by the Chaos Heart, which was used by Dimentio at the end of the game to defeat Mario and his friends. And the only way they could beat him is via the Pure Hearts.
I would love to discuss how it works for you if you're still confused about it.
I don't think it's necessarily Low 1-C, though, considering Mario is just stepping into an invisible direction that exists orthogonal to his world, and not much aside from that. The ability itself seems to be just Spatial Manipulation coupled with Interdimensional range.