I'd say Mickey Mouse is definitely way better than his infamous South Park counterpart.
I'm imaging Mickey who fires his evil South Park counterpart.
Mickey: (to his South Park counterpart) So, you're trying to make me look like a corporate d***ebag? Well then, kindly consider getting your butt out of this studio and never come back here again, you vile imposter! And consider yourself BROKE!
The South Park version of Mickey Mouse is probably being extremely mean, ungrateful, disrespectful, ignorant, arrogant, intolerant, abusive, greedy and selfish.