JeffTilley depends on the behemoth swinging it.....it's more about what fits the particular golfer. SS is overrated if you can't hit the center of the face and more importantly control where the golf ball is going.
I do think there is something too the heavier club being able to have a higher Cor or CT.....Wilson triton was non conforming with the heavier sole plate AND the heaviest screw weights, BOTH installed....COR/CT was past the limit! Now, that will only work if it fits the golfer. Most likely would not be able handle that much weight at that stock length.....so it's all relative. Funny thing is that the usga can't do squat about a triton owner getting to that same weight, but in a different way (rat glue or lead tape or???) and still having a higher than allowed COR/CT. I am convinced that my f6, both heaviest weights possible in both ports and several grams of lead tape, has a higher COR than stock which is about 16 grams lighter (headweight), but ???, it's not a matter of COR/CT for me, but getting to something I can swing.....stock anything, especially woods and hybrids are sh1te for me.