AK still gives more Tomes overall so if you have that dungeon down and have a good turnover time for it there really isn't much reason to go to WP.

The only downside of the changes to WP is that now i hardly get people stuck on the second boss XD. I used to get 3 of those runs in an hour back to back and now they get hoovered up so it's like 1 run like that maybe every 2-3 hours.