Alicia quite annoying, I can see it, but think about it:
Hans have 140 hp, Alicia 100 hp, which means:
1) it easier to down Alicia than Hans.
2) When Hans down you, he still can approach you with jetpack, while Alicia have to approach on foot (and hovering not give her any speed boost), given the fact that Hans have both speed and decent HP-bar means little bit you can do once he downed you, you can't shoot him back, you can't resist in melee, due to melee mechanics.
In order to hover Alicia have to double-tap her ability and need proper environment, what requried at least some positioning and awarness, Hans can hover instantly at any given time as he desires.
Alicia make 40 damage with her shotgun, and you need to aim; No need to aim as Hans, just shoot the ground (damn, you can do it even on a gamepad) and you have 50-60 damage (60 damage, you can literally one-shot Harec). Both guns have same rate of fire and fairly comparable clip-size.
Alicia can't manage her adrenalin, she can't ambush you, she can't surprise you (unless you lack of awareness), she can't adapt and change strategy, she's one trick pony, that is the whole point of the character, she's annoying, but really predictable. Needless to say that Hans still have adrenalin managment even though he don't really need it that often.
Hans is straight forward broken, it's frustrating to face him both as raider and as antagonist, he's straight forward replace Alicia by any means.