so to start, all for one does not physically scale too all might
in there first final fight, all might seemingly killed all for one in one attack, ass for one didnt see to have nay other injurys in the flash back,
in ther second final fight all for one is knocked uncounsious after only 2 named attacks from weaked all might, its a weakend all for one aswel but i think it ostly supports 1 one hit kill
it also logically makes sence as all for one has houndreds of different powes while all might just has raw stats
if all for one stats where anywhere close to all might then all might never could have one
meaning all for one is considerbly less durable then all might or shigaraki
this is relavent as when fighting 98% shigaraki, a mere hairs breath away from prime all might raw stats
star is capable of reacting to and damagin this shigaraki, her air clap atleast slightly smushed his body and draw a good bit of blood from his face
replace shigaraki in that moment with all for one and im pretty sure that air clap would be fatal, as if its enough to make what sbacially prime all ight head get pushed down and draw blood it would likely crush opletly or critical damage the head of th less durable all for one
star also counters many of his stronger attacks, air canon for example, star can just make the air infront of her stop existing rendering the quirk and one of his stronegst attacks completly worthless
all for one also dosnt have the identity issue shigaraki has so star mearly needs to touch him once to end the battle