HnC
You guys mean HnC right? Given that it's his set...
Well, I think Nails already explained well enough the reasons to use Signal Beam on the last moveslot and imo it counts as worthy enough for its own set. Furthermore, I think Nails did explain that Signal Beam beats Slowking, which is one of its usual counters, which the other set could not do (even if it did beat other things like Esca). It would now be up to the voting stage to decide which set is more effective at beating its counters (and deciding which counter is more worth beating) and more innovative.
He slashed in the same moves as HnC though, so it is the same set with another possible move.