The numbers above/below/in/behind the units do not affect the gameplay, but HD+ ALREADY breaks it, at least by changing the skill tree. So at the very least, it won't get any worse.
Added after 55 seconds
I think that when the skill of one player is leveled by software, it is completely wrong. Even though Wick says that in this case, you need to develop other components of the skill, I don't agree with him.