I don't know why you are getting aggressive, but if you are using this wiki, you should understand why something like this is difficult to provide.
The wiki always treats being hit by stronger people as meaning you are relative to them. So even when Garou does adapt rapidly to someone who is massively stronger than him (Darkshine, Overgrown Rover, Sage Centipede), the wiki treats it as if he started off relative to them, rather than being a lower tier. Thus it's hard to get calculative values like this.
But if you plainly just look at the in-verse context, it is clear to see many cases where the opponent is definitely capable of one-shotting Garou, but he adapts to it.
Darkshine is a blatant example. He was tanking all of Garou's attacks without issue. One of his tackles smashed Garou's ribcage and had Darkshine believing him to be dead. Garou came back and beat his ass.
I already know you're going to say the same, dishonest statement: "That isn't an explicit 5x difference."
The reason you're even mentioning a 5x gap is because your point is that Deku close to one-shotting. My point is that Garou has overcome gaps in strength where the other person was close to or has downright "one-shotted him" before in his own manga. You don't need these explicit numbers to compare things.
Also, in the case of Sage Centipede. Going by how the wiki indexes it, Garou fought against 7-As and then immediately became 6-A upon fighting Sage.
Literally what in the hell does Deku do about that gap? You want calculations and wiki values, then that is going from 396.99 Megatons to 2.46 Petatons in a practically instantaneous timeframe.
A difference in AP of 6,196,629x