I see ninjas using Doton on bosses a lot, i'd guess about half of the ninjas use it. Why? As far as i understand, Doton deals a total of 270 potency to every target, IF the target stays within the Doton for the entire 24 seconds. Also, Doton needs 3 mudra to cast. While Raiton needs 2 mudra and deals 400 (formerly 360) potency in damage.
Are all these ninjas using the wrong skill or am i missing something?