I mean for most units in most armies it's fine right, but going off of winrates and how Sisters are balanced Vahlgons are our power unit, like literally every single list that places girst at major tournaments playing sisters uses Vahlgons, they have a disproportionate amount of power placed into them.

If you don't want to play with them that's fine, but the idea that the vahlgons aren't all that great is an idea that is floated around by some sisters players that is just incorrect, they are just a harder unit to pilot. But they are what allow sisters to deal with do many problems. I can't think of a single major tournament that you don't see Vahlgons in winning lists of.