We'll that's a real fish. Prob nearer top10%, so that we are rather well ahead vs. his range BUT we don't die to blinds. ICM is little bitchy too so we really don't want any 50-50-flip here. Depends also how the third player is playing: if he's inclined to push again button then we should fold (very) little more and let them flip.
Some fishes open 3bb always, but aren't calling every 3-bet.