User blog comment:FairyRaven/Fairy Tail Chapter 362: Natsu vs. Jackal, Review and Commentary/@comment-206.248.91.69-20131129164445/@comment-7418318-20131129164917

While I didn't find it too bad either, how did it take Wendy and Lucy to beat him?

As far as attacks go, the two girls made one attack each, which Jackal just blocked with his explosions.

I guess you could count Wendy healing Natsu and Lucy buying time (without her interference, Michello would most likely have been killed before Natsu got back), but that's about all the two were allowed to contribute to the fight.