Sadly earthquake is not guaranteed stun, just like gambler's all-in

In PvP FW is kinda useless, his casting speed is slower than IW. Mage always be a support in pvp, that's why mostly IW player doesn't spend single point in INT and go with WIS and VIT. IW is a nightmare for gambler, because of his slow and yeah, IW's new skill is AoE freeze guaranteed and his AoE skills have a chance to freeze too.

Well, WZ in arus is not hard anymore because there's no high-geared gambler with full luck. That's why u can tank it with FW. And also don't forget IW has glacier shield which absorb 80k damage for short time