I just sort of realized this while fighting them with Seth...
The Xe-A-Thoul trio has a counterattack called Thndrblast. It's Factor 7 (electric), right? Nope. Factor 2. Meanwhile, their physical attacks are Factor 7, while their palette swaps (D-Elm-Lars, Le-Faw-Gan, Gi-Le-Farg) all have a Factor 2 physical attack. I wonder if this was done unintentionally?