Anyone else notice the terrible damage of Zargala's 3rd skill, Crack Armor?

It's AOE and hits 3 times (if Ascended to 3*, otherwise only 2 times). I know AOE in general will do (slightly) less damage than single target, which makes sense, but each hit does like 25% of normal damage...

For example, 1st skill (single target) hits for like 10k, but each hit of the AOE is approx 2.5k (x3 = 7.5k). So that means in total it hits AOE for about 75% damage. And before ascension, about 50% (because only hits twice, not 3x). 

It looks amazing on paper... hits all enemies 3 times... but each hit is a fraction of a regular hit. Every other AOE hero skill does nearly full damage per hit! I'm sure it was coded wrong and does damage based on a stat other than ATK, or the multiplier in it's calculations wasnt input correctly. No way it's working as intended.

Discuss!