Any job can Tank if you right lvl,gear,sj which is very sad cause back in the days that wasn't true but now a days even cause my friend is a 99 WHM and he can tank those gigas is LTP{A} using just regen IV, protect V, Haste, and no Genbu's shield and normal gear is not uber BUT Decent enough for a whm. Also my smn can tank for a few while but mostly until my Avatar gets the hate :D .