Not saying the IAR had a lot, but it still had more than the D.520, being Romania's main frontline fighter untill July of '44 and all.
The contributions of the IAR 80/IAR 81 to the war was just as minor, it not more so than the D.520. It may have been Romania's main fighter type before being pulled from service, it doesn't change the IAR 80/81 didn't contribute anything to the air war at all. The reason is because Romania was such a minor player. Even in the defense of it's own skies it was a minor player, with Germany providing the bulk of Romania's air defenses.
ack-ack