How can Muddy Waters Anthology drop 445 places in 8 years?

I've had a soft spot for the Miseducation since 1999, but pumping it 300 places to make it into the top 10, I don't know about that.

I don't understand the swings with Funkadelic's nor what they've done with Forever changes.

This list is what it is, but come on.

(So Nevermind is the new RSS' London calling, it's official, we're old now.)