[PlasmaKrab]

Which period would that be in, that Soviet AA weapons are far more accurate than US equivalents?
Just to take an example, you mentioned the HAWK here. Note how the baseline HAWK (MIM-23A, IOC 1960) has an accuracy of 100 and EW of 5, while the S-125 Neva aka SA-3 Goa has an accuracy of 40 and EW of 3. As far as I can tell, both systems are broadly comparable, with accordingly a possible advantage to the HAWK in terms of guidance and propulsion. Not enough to give it the accuracy level of a Stinger, and give the improved 70s solid-state models the same accuracy as a Patriot.
As I said, there's the same issue with ATGMs, but I can live with a Konkurs at 80 acc and a TOW-1 at 90.

Now granted, at more recent dates the Russian material takes the lead to some extent, but maybe that's because the US OOB doesn't feature any SAM newer than the late 80s while the Russian developments are better modeled.
And as far as I have seen, SAMs are pretty much useless against modern aircraft in any case (I mean, any). That's probably a side-effect of EW scaling, so I think it could be worked out.

P.S. just running a test scenario with a selection of Russian aircraft against my best CWM French SAMs. It took 6 launches and 3 hits from 2 Aster-15 launchers (accuracy 180, EW 25) to down one MiG-1.42 with 20 EW. The 1990-top-range Crotale-NG with 10 EW and 150 accuracy didn't even get a chance above 5%.