who had the better chin Tyson or Lewis

who had the better chin Tyson or Lewis ? i say Tyson if someone had hit Lewis as hard as Lewis was hitting Tyson he would have been gone inside 2,3 rounds when Tyson got stopped against Holy he was caught bang on the chin he walked straight onto a right hand as clean as you like and he did not get knocked out and i know Holy is not a huge puncher but that should have Koed Tyson lets not forget Holy had Bowe on the deck previously so he has more pop than people think and he knocked out Buster Douglas which Mike Tyson could not do that video on youtube does not tell the truye story IMO ive seen most of Lewis fights and he was Knocked out by McCall and Rahman and he was staggering against Briggs,Klit, i thought Ray Mercer had him hurt aswell and Tua did not really land flush with his full power there were a lot of clipping shots he was not packing glass he had a decent chin but not great and i think Tyson had a stronger chin