So, will critical damage mod sets now be useless?

This is all somewhat sloppy math I'm using because it has to be to make a general conclusion.

In order to have precise math, we'd need to be comparing specific mods on a predetermined character since in order to truly compare, we have to convert flat offense secondaries to % offense secondaries, and that can only be done if we know the (base offense - offense from currently equipped gear) of the character in question.