It's obvious the list was made after WotLK became known. Not only did the guy who made the list admit it (and nobody claiming the list existed in 2004 has shown any proof), after WotLK the accuracy just takes a 99% nosedive. That has nothing to do with "not anticipating Blizzard noticing that 10 levels per expansion is too much". And no, the list is not accurate about Cataclysm and Pandaria. At all.