Huuuge salary difference. I think Dickert was making $250,000. Multiply that by 2.7 and you get what Claey was making:
"Assistant coaches earned $3.4 million, with defensive coordinator Tracy Claeys ($676,875) and defensive line coach Jeff Phelps ($434,824.50) the two highest paid. Claeys is the only assistant with performance-based incentives included in his contract..."
https://247sports.com/college/washington-state/ContentGallery/Washington-State-football-contracts-Mike-Leach-Tracy-Claeys-Jeff-Phelps-Kendrick-Shavers-Cougars-WSU-Cougs-salary-128892434/