Dots have the wrong crit value on Phoenix. Crit DoTs should crit up to 100% even in PvP and are not capped at 50% like melee and Cast crits. They dont even reach 50%. After dozens of Zerg DoTs its clear that crit DoTs are capped between 29% and 30% at the moment.
Screenshot of a bunch of crittical DoTs: https://imgur.com/a/8coHQpq
Just use the formula W x 100: G and you'll see not one crittical DoT goes above 30%.
a Shaman solo video.TWO
a Shaman solo video