Well, you make a good Point. However, what youre talking about is a general offensive strategy, I was saying he almost never uses the traditional guard even when he is on the defensive. There are times when the opponent is clearly attacking and Wlad is "playing defense", but he never uses a conventional guard. I understand that he isnt an orthodox fighter, but even then, one must occasionally Wall up behind ones guard (if you are out angled, trapped against the ropes, tired etc).
Also the "Hands low" Approach is usually only good against smaller guys and if your are athletically superior. In his last two bouts he was 40 and had a reach disadvantage. The result is clear.
Also Pulev lost because his Hands werent protecting his head. thats a defensive fail.