It feels so weird because you would instantly think that Sym would just get oneshot/destroyed but people have a really hard time aiming at her to kill her for some reason. Maybe they just panic when the beam is on them?
Only character that's easy to use to deal with her is Hog cause of Hook. Or another Sym lol
E: i guess Mcree too. Basically any stun/disable character.
Well you only have 3 seconds to kill her before her beam put you to shame, that's probably why.