However, I have very little interest in whether 1 class is balanced against the other.
You could've stopped here.
Your absurd case thus does not sufficiently fulfill the criteria here, because, as I pointed out above, you can very well make the game itself challenging to a player who is using these mechanics, simply by making the game itself take advantage of them as well.
Complete non-sequitur. It's an internally coherent argument about the relevance of balance to cooperative games, increasing the complexity of the game does not negate either premise of the argument. You're begging the question.
