You kinda did by sticking to the argument that Hurts outplayed Mahomes and using the total stats to support that. Hurts didn't outplay Mahomes.
My point is, that is a simplistic argument that doesn't consider every aspect of evaluating a QB's play.
If you can point to one or two bad plays that had a significant impact on the outcome, like the fumble, than you just can't make the argument that the QB somehow outplayed the opposing QB because he had a higher passing yardage stat, or a slightly higher comp % stat, or rushed for more yards.
It may work in fantasy football but on an actual football field every play matters and on that football field Hurts didn't outplay Mahomes even though he played very well for the most part.