You know what a "Bauernopfer" is? Especially german tank doctrine was agressive ("Ausnutzen!") and like Soviets they sometimes don´t bother losses.
To the CM engine: The AI normally concentrates its troops (also tanks) in one ( or two) points.
It would be a good idea to identify them with light, fast tanks (or PSW´s) and then to outflank the concentrations by using the terrain ( speed is essential). Enemy stragglers should be destroyed immediatly if encountered. Especially useful against tanks with slow turret speed is the two pronged attack with delays:
Get in view of enemy tanks with one group from one side, retreat or get in cover, then attack the group from another angle ( it can even be only a marginal agnle for the opposing forces).