That's what I was guessing myself. The only issue is that this season I've had the Total Merchandise value always larger than the Baseline Revenue one.
I've noticed it because there is a least 5k difference any time during the week and sometimes even larger.
So if I have 3 value updates during the week - 160 / 159 / 161 - I would thing the Baseline would be 160 but it's 155.
Also I'm in a league where the League Average is a lor larger so this is not a issue.