Anyways Netero takes this.
Even if we equalise speed, Netero still has an imprentrable defence/attack hatsu. Meaning All Might wont land any hits at all. His prayer speed/hand movements will be faster than AM's movement speed...which means AM is fucked.
The only way to beat through it is to have Mereum lvl intelligence. Which the AM does not have.
His DC is also above AM's as well
Has strong enough AP to hurt the most durable creature in HxH
And people in HxH are really durable. Exihibit B
Exhibit C
In conclusion AM is when dead superhero. Netero low-mid diffs.