Just to follow up: 76mm (L42 or 51) is modelled about right in CMBB, yes ? ArgusEye points out that in CMBB, ATGs don't fare as well as in real life, because of borg spotting, non-modelling of armour failure after repeated hits, and non-prevalence of hits on running train-- which, I assume, means that in RL, 76mm ATGs could and did take out Tigers at close range better than in CMBB.
What about T-34/76s ? In CMBB, against Tigers, any attempt to close and flank usually ends badly. Was this tactic not used in real life ? Was it as costly in RL as in CMBB ? Or are there more factors (borg spotting, non-kneading, non-targetting of running train) which affect the execution of these tactics with T-34 against Tiger ?