No need to link me vid.
I'm the guy who does balance similar kind of randomness in games actually.
There is balance, there is immersion, there is what makes sense to happen and what not.
Thing is to gauge how often these most unpleasent things happen and evaluate from there, the cause, frequency and so on.
ISU of old was best example. That thing wiped reliably full health squads, so it was nerfed numerous times.
It still wipes squads, but not nearly as often as it used to. It should do it, because it would look silly for a gun like this not to wipe on perfect score and this is what you're suggesting.
There are only few units able to one shot full health squad, even less if we don't consider squad clumping, but since squads still do clump, this is your cause for the wipes, not the weapons themselves and that should be fixed, not artificial nerfs or counter logical buffs for a problem that can be fixed with squad spacing fixes.
Just because you "work" for some budget-less no-name student indie startup doesn't make you experienced, knowledgeable or relevant in anyway at all. You should watch the video.
PS: I love kids who call themselves "balance designers" and "game developers" because they can open up Unity3D.