User blog comment:FairyRaven/Fairy Tail Chapter 363: The Stories That Demons Read, Review and Commentary/@comment-10425110-20131206155111/@comment-7418318-20131206162631

Sure the two might not make the strongest pair out of all possible pairings, but how many of those "possible" pairings are ever going to happen?

I don't see Laxus taking this kind of assignment with anyone other than his Raijinshuu. And Gildarts is off to god knows where and was a loner to begin with.

Besides it was the "most reliable" not the "strongest" duo.