I have absolutely no problem with rogue and mage. Exodia takes too long to pull off and rogue needs to highroll just to survive. Mainly the warrior quest which encourages taunts is the hardest to beat.
Why? PIRATE WARRIOR
and midrange hunter which is arguably better.
Rogue gets punched in the face unless it highrolls
Mage gets punched in the face
everything else but taunts get punched in the face.