I think I'd run with the Bofor round a 1000 tungsten balls per round has more chances of getting a hit that 5000 single rounds the latest Bofor I think has a higher rate of fire than the one pictured.
I was searching for the 5 round burst they shot through a concrete panel with them all bursting behind the panel after penetrating it, from memory I think it was 300-400mm thick reinforced concrete.