Well I just played tank fight at prokhorovka.
We randomly picked sides and I ended up with the russians. Now with this game i had the worst luck than I have ever had with ToI in the past yet I only lost by 1VP (and very close to a tie).
All my reinforcement rolls only gave me one tank each time, so only 3 tanks extra to take on the germans (I was looking forward to haveing an extra 9 tanks to play with)
My arty rolls were riddiculas with all 4 of my cards drifting into an empty hex (even though I had an officer spotting)
And my attack rolls were pretty ordinary.
So after the game we were both thinking if the russians did get another 3 or 4 tanks (on average this would be the case) the germans would have been very hard pressed to win at all (and if the russians were luckly enough to roll all 4 or 6 pretty much no chance)