Speaking of the webcomic, a suppressed Golden Sperm says
Garou hit him with a punch many levels above what the heroes are capable of.
Black Sperm experienced both the result and aftermath of Tatsumaki ripping the MA base out of the ground.
Yet he's also surprised when a far weaker version of Tatsumaki ripped Multi-Cell's head off. He also has to resist her attempts to break his neck, and she later uses the last of her remaining power in one burst against Garou to immobilise him after he curbstomped GS at full power.
Admittedly, the base feat was casual, but I'm not sure how to treat this. Is he only referring to their punches, or just the ability to deal damage? If so, that would also mean the base feat is ultra-casual? Or does this whole thing screw up scaling?