That's all it is. A stronger life surge. Without the heal. It is stronger then LS yes but I think the skill is so lackluster when you make that connection a ninja hits things fast and hard and multiple times. The ability had the potential to hit twice with each WS for 10 seconds but they said whoa wait a minute and just gave you a slightly better lvl 18 skill as a lvl 58 skill. And then rub it in with ADfaD and let you hit 3 times but for 100 pot each all with a chance to crit.

Grump grump aside Duality Aeo Edge is our strongest attack in our kit. Duality is good but it could have been better.