Realism vs "Winning"

[serg3d]

I'm playing Soviet long cmapin, an my core force more or less historically correct understrength tank brigade. However I just couldn't resist few cool toys - some KV-2 and T-34-57. Both had seen actual combat, but were exceptionaly few - all(?) KV-2 were lost in first months, and T-34-57 were few and had problems with ammo and cannon barrels.

historical soviet tank brigade 1941:
7 KV-1
22 T-34
10-50 T-60
Mech infantry batallion (introduced later)
ATG battery
AA battery
mortar battery
trucks, armored cars etc.

For now my core is (3/1942)
4 KV-1
3 KV-2 (not historical, should be KV-1)
4 T-34
3 T-34-57 (semi-historical, should be plain T-34)
5 T-60
5 Zis-30 TD (semi-historical, weren't in the the tank brigades)
2 rifle companies
1 eng company
AA battery
SPAA trucks battery
ATG battery
10 120mm mortars (too much for tank brigade)
4 off-board 152mm (attached to brigade from the reserve of the High Command
halftrucks for two infantry companies (not historical)