Mages are not too bad against the Professor. The enemy is ghost, and ghost are actually weaker against magic than direct attacks. Of course, ghosts are generally annoying to kill.
Casting Banish, Dia, and Choke will help to bring down its defenses. One full well-balanced PT should do fine (may take a little while). The pops are sleepable with a Bard, or you can just kill them (just kite the boss around).
The key is to go in pop Professor with zero Fomor hate. When I did it, we had a 2-party alliance (a JP group). I myself need to get 8-3/4 finish... I want that darn ring lol.
____________________________
Amanada (Cerberus-Retired) (aka MaiNoKen/Steven)
-- Thank you for the fun times in Vana'diel
Art for the sake of art itself is an idle sentence.
Art for the sake of truth, for the sake of what is
beautiful and good — that is the creed I seek.
- George Sand
A designer knows he has achieved perfection,
not when there is nothing left to add,
but when there is nothing left to take away.
- Antoine de Saint-Exupéry