Fighting fighters is actually the easier of the 3 tasks (a mage can dispose of one rather quickly even in no hp/sp battles, and with slow we can kite them to death easily), but when it comes to against archers and clerics we are doomed. Even with our debuff/drain/steal clerics can easily handle them due to our cast time, ps it takes roughly 6 wacks from a cleric to finish a mage off.
As with archers... they're the class meant to deal highest damage to a single target and have decent evasion/defense against most classes. (not even rare to see fighters missing them close to 100% of the time).