"Therfore yes when he is defensive his punch resistance is better." Then we don't have a disagreement. Changing your style can improve your ability to take a punch. But other things being equal, a heavier AJ fighting in the same style will take the punch better. "Thats why he didn't do anything until he realized its now or never and he let his hands go in round 12 and had success." This is a myth. If anyone is pressing the action in the last round, it's Fury This content is protected Wlad lands 3-4 clean punches, he didn't even legitimately win the last round. As Fury stated, the only reason why Wlad landed that many was because Fury wasn't boxing on the outside in the 12th and was being more aggressive. Also we have to question why wasn't Wlad more aggressive after he realised that Fury wasn't a power puncher like Corrie Sanders. Could it be that Fury punches harder than most give him credit for? Wlad's face after the fight gives us part of the answer.
Well punch resistance is still punch resistance. Its just taking a punch better. Being lighter assumes other factors don't play as weight isn't the only factor in punch resistance. Seeing the punch come isn't slipping or rolling the shot. Seeing it also means you can brace for is and take it. Therfore punch resistance isn't weaker. And then when Wlad started pressing the action later in the round and started getting in cleaner shots he started turning the tide of the fight. Wlad even buckled Fury's legs with a left hook. Fury was being defensive at the point when Wlad landed 2 flush right hands.