User blog comment:Mich, Michele & Kuhla/Future Units Preview/@comment-81.153.8.43-20160130184230/@comment-26336535-20160131140312

Melina still doesn't have the advantage there in terms of damage (in AOE of course she wins) even if you ignore crit. Hadaron gives himself a 400% ATK stat buff in stealth, which already tops Melina's multiplier. So, barring LS, Melina might have twice the multiplier, but Hadaron now has 500% ATK. Once you factor in LS, Hadaron goes even further. Even at full health, Hadaron has a 130% ATK buff from his LS, while Melina only has 80%. Note that I'm still barring crit damage.

But what about full damage potential? Well, Melina has twice the multiplier, and she has a 180% boost to ATK thanks to her LS and ES. Hadaron has half the multiplier, but he has a 530% ATK buff from his LS, 330% from his sphere, and 400% more from his Stealth effect. When he's at less than 75% health, he can already beat out most STSBBs with his normal attack alone. Hadaron clearly has the advantage.