The mistake you made there was fausting the KV-8 in the first place. Of course it should be able to wipe out a vet 3 grenadier squad, its sole purpose is to absolutely destroy infantry that are stupid enough to get too close or try to faust/shrek it.
I don't see how you can complain when you knew the risks would be huge if you stayed and tried to faust a KV-8.
so tell me, which unit can wipe out a 6 man squad like the KV-8 does so quickly from the Ostheer side ?
it's ridiculous how so many units from the Soviets can completely wipe out grenadiers or pgrens in such a short amount of time.
COH is all about keeping your units alive and trying to faust or not, a 2 second mistake can cost you a whole squad vs. the KV-8 and a bunch of other soviet units for that matter.