According to the last version of the official stats Tomura's power jumped from 2/5 to 6/6 S+ . I think this was when
he awakened the full power of his decay, which made him able to decay a whole city .
but after that on top of that,
he received All for One which a bunch of quirks attained already, like super regeneration, air cannon and black tendrils
So, with all these new powers attained, did he even surpass All Might former power? Did the last stats took in consideration these last powers he got in the manga or were they made before these events?