I just ran this in ICMIzer. The first run, the button is only supposed to open 4% of hands based on his sizing and ICM pressure. So we only shove with KK+ and AKs. Obviosuly he was opening more than 4%, since he had JTs. Then I node locked the button range to 20%. 99 is still a fold:
If I node lick him to 30%
So this is closer than I first thought. It really depends on how wide the button is getting here.