Hrmm. I'll have to check Nystorm's stream then. I'm not sure how Grens can take on clown car snipers or flamers.
Flamers are easy. Two gren squads focus firing on a charging engineer squad kills it very, very quickly. You MUST focus fire though, or your grens will shoot that conscript in the distance behind a stone wall instead of the engineer with a flamethrower in his face.
Clown cars are trickier, but it comes down to keeping your squads together and realizing that grens aren't the solution to all problems. As long as you have two gren squads together, any mismicro on the clown car = instant death from 2x panzerfausts. Additionally, with more gren squads you can more easily flank a clown car and cut off it's retreat (easier than you might think).
Still, the point is to buy time for you to tech to a more complete solution (scout cars or Ostwind). Nobody's saying that you're not going to get hammered by a clown car sniper squad, but that doesn't mean it's too strong. When facing snipers I often stick my units in buildings (which significantly reduces sniper accuracy) or behind LOS-blockers (hedges, buildings, etc.) to force them to come closer or to disengage. Is this a viable long-term strategy? Of course not. But my whole goal is to stay alive to get to T3, at which point the gimmicky clown car/T-70 problems become irrelevant and actually a liability. That generally only gives him about a 1:30-2:00 to make my life miserable.
Russian MG teams are way more problematic. I'm 0-2 against level 40+ players using nonstop HMG teams (think WSC build from COH1). Mortars don't kill them fast enough, they can deploy in the field of fire of an MG42 and still win, and they lock down your slower infantry. Thinking about trying halftrack flanking play next time I see it.
edit: Also, after someone else on this forum mentioned it, I think Ram is not as bad as I originally thought. I've successfully dodged it complete twice (one time with blitzkrieg) by driving towards the tank at an angle and having it fly past me. The key seems to be to time it right. Too early and it'll turn and hit you, too late and you won't get enough movement to the side. I've also taken a ram to the side where my main gun was facing away and I didn't lose the main gun. I'll do more research, but I'm hoping that Ram will be the tank equivalent of grenades- devastating if you're not looking, but manageable if you're paying attention and have quick reflexes.