Prime AFO and Rewind AFO have no reason to physically scale to Prime All Might.
Considering everything we know, I'm 90% certain Prime All Might was vastly stronger than AFO during their fight. We have no reason to assume AFO was physically comparable to him and was able to take hits from him. For all we know All Might only landed one direct hit, which was the face crusher.
And Rewind AFO doesn't scale to Prime AFO anyway. Their Quirks are completely different from each other, Rewind AFO is just stronger than his Weakened self. He doesn't have the same Quirks as he use to, as Gran Torino stated his Quirks are completely different compared to when he fought All Might.
AFO has to be inferior to All Might as well, since it'd be impossible for All Might to win if AFO was equal to him and has thousands of more abilities. AFO considers the power of One For All to be greater than anything in the world, including New Order. So I highly doubt he could match Prime All Might in strength.
Or what, does AFO thinks becoming 2x stronger is godly?
We have no idea what kind of Quirk was used to blow a hole into All Might. The most we can say is that Prime AFO's AP would scale due to that feat. But his Striking Strength and Durability has zero reason to scale at all. Honestly, I'm still an avid supporter of getting rid of AFO's damn prime key due to how unknown it is.
We see in Vigilantes that AFO tries to purposefully avoid attracting All Might's attention, he's afraid of him and knows he can't defeat him. It seems like AFO's whole research into Nomu was so he could defeat All Might. Probably why the surgery Shiggy got was originally meant for AFO.
Rewind AFO could be weaker or vastly stronger than his Prime self, we just don't know and shouldn't make assumptions on this stuff. Maybe we'll get more information in the future, but right now I'm heavily against scaling Rewind AFO to Prime All Might just because.
We need actual direct link between them, not an assumption because we feel like it makes sense or whatever.