What even is a divergent variable? Is this more of your pretzel math terms?
I assume you mean them not being the same variable?
Apparently you don’t understand that two variables can correlate without being the same.
Your ranking can drop or rise independent of your MMR and that’s just a fact.
The proof? If your MMR wasn’t similar enough to your opponent, they wouldn’t be your match in that game yet there are often wide disparities in rankings across matches.