topic starter is right,
@item2 1501 1 1 0 0 4001 4001 4001 4001
@item2 1502 1 1 0 0 4001 4001 4001 4001
@item2 1503 1 1 0 0 4001 4001 4001 4001
make 3 clubs, each having different slots
Item ID 1501 shows I have 3 poring card insert
Item ID 1502 shows I have 4 poring card insert
Item ID 1503 shows I don't have poring card inserted
in other words this *isequippedcnt is totally depends on the amount of slots the equipment having
if the check is just based on the player insert the card by double clicking the card, above post might give correct answer
BUT if your server has a script that can slot cards into non-slot-able area (eg: rune, charms), then have to do source modifications ... maybe