4bet/calling is pretty spew imo without relevant history. had he only 50bb or something it would be fine but 100bb deep i think we're just too crushed by his range when we get it in. his 3bet range is likely something like TT+,AQ and maybe some low suited aces. 4bet bluffs are pretty rare at 25nl and a decent reg would know this, i can't see him jamming worse than QQ+,AK. i like flatting pre here and keeping his range wide enough for JJ to have value postflop.