In real Life, a KT killed a SU85 with one shot at a range of 1500m, easily.
Its about the sniper balance, nobody needs 2 men squad snipers, they ruin teamgames.
The counters need buffed, not necessarily the 2nd man. Yall forget that some axis squads have the ability to highly condense DPS onto a single model (grens, obers, ostroppen) and the rest have pretty solid on the move weapons or long range weapons (some like fussies have both) a single model could quite easily be focused down by bad RNG and unlike the ost and the brits the soviet dont have immediate access to MGs to keep potential rushes away.
Additionally the ONLY way for soviet to heal units is in their base sector and only after 250mp
Ost can get med kits on next to every squad with some vet, or a bunker with medics (not cheap, but at least can be on field) and can have no pop fortifications to help against infantry flanks/ rushes as well (again, not cheap but 100% viable in team games, which is where you cited the problem of 2 man snipers)
The brits can heal everyone with a single small munitions cost or have a fancy 2 in 1 (or like 4 in 1 if you count weapon racks and defensive ary) strong point sappers build.
A single soviet model could take a burst from an LMG then have literally no option but hard retreat all the way to base
If made 1 man i would STRONGLY suggest its vet 1 be changed from the stolen flare ability that used to be no vet to something wmthat adresses the previous concern on durability, perhaps something like passive heal out of combat and in friendly territory or a reduced target size (maybe both) as a straight up worse version of the ost sniper would be bullshit