Even doing it on that fight, that's still less than half that things health if I recall currently, and you still need to strip armor to do this combo.
It is a boatload of damage but ... once you strip armor, you can CC the thing indefinitely anyways. Meanwhile, nerfing the combo makes it even tougher to use in normal fights, where the competition against CC for 1 ap vs 2ap and 2 memory slots is hard enough.
Just my opinion.
