Are top heavies more likely to be planted on their asses?

I've always thought most boxers legs are too thin except Manny's and some others.
I think top heavies are more likely to go down

 

Seems reasonable.

 

look at Khan pre roach and Ariza, he had problems taking a shot and one of the first things they did was remove bulk from his top half and put it on his legs.

Now im not saying he has a chin like Oliver Mccall now but it has definately improved

 

Thomas Hearns skinny legs suspect jaw, makes sense that strong legs can help you take a punch

 

Mike Tyson had some pretty sturdy legs, but he was built all around.
Margarito had some chicken legs though in contrast