To answer your question, his walks normalize poorly. What is equally as poor, is the draft center's way of showing how walks might normalize. Its pretty rare to see a player's real life BB/9 differ from his BB/9# by more than a hundredth of a walk.
I looked at B-R.com and the walk rate that year was 3.1, which is almost as high as modern ball. It doesn't normalize too horribly, but going from a 2.12/9 to 3.75/9 in the performance history for 80mil, doesn't seem far fetched. The p.h. also shows him having an average ERA of 3.4, which for $36,000/IP is about right. Not a big bargain, but not a broken player either.