Question about Cross Attacking in Panzer Campaigns

[YasinAhmet]

Assuming that the Russian units are all from the same division (that is, ignoring the obvious fact that they aren't, just for discussion purposes), I can say that the only advantage gained from attacking from both hexes is an improvement in the combat ratio, i.e. the odds.

The only other thing that might affect it, but you didn't mention is, would be if one of those attacking stacks were not crossing the stream. Were that the case, then there would be a non-odds-based benefit, that being that the stream would be negated.

What about the odds? Is there a percent or number about the improvement?