If the seat-to-seat variance was bad before running MultEQ, it will be the same after running MultEQ. Let's look at the marked areas in the following graphs.
Large seat-to-seat variance before MultEQ, same large variance after running MultEQ:
Low seat-to-seat variance before MultEQ, same low variance after running MultEQ:
What I didn't look at yet is whether MultEQ is prioritizing measurement location 1 or not. Do you have any data on that?