[DSII]: HEAT vs APFC

To rationalise HEAT vs APFC,

The effectiveness of a heat round is dependant on the stable formation of a
jet of gas/liquid metal which is of such high energy that it can punch
through armour. So if the APFC's go off as the missile strikes this can
disrupt the jet formation. Also the effect may be the same as the chobbam
armour of the UK's tanks today