Funfact: A competent player is always better than an incompetent one.
But it still doesn't change the fact that 2x whms > 2x sch.
As far as I understand what people want is the following:
2x whm = 2x sch but still underperform the 1x whm 1x sch combo and there is nothing wrong with that. Nobody wants the other class to be inferior.