Okay.
We want all votes to be equal in value, but in mixed member systems they aren't, because the losing votes don't have as much weight as the winning votes. In MMP, the vote weight ratio tends to be about 3:1. In my system, it is lower. It can be made 2:1 or even better. The only system in which you are going to get exact equality among all votes is PR, where everybody's vote counts and there is no local representation. It works that way.