Didn't Natsu require Makarov's help, and even at best, it was a double knock-out? (given that Natsu lost consciousness immediately after beating Zancrow) Plus, Loki required Capricorn's help to beat Zoldeo, who was the main threat.
You're completely right. I totally forgot about that fight in its entirety pretty much. It was just so bland none of it stuck with me.