>>49967708They are kinda underrated, but i don't think they are the coolest. Xerneas is one of few Fairy-types i actually enjoy, even if it is a bit bulky to deal with Power Herb in the actual game since it gets consumed, so it only gets to be its best be in Battle Facilities and Online where you get consumed items back after battle. I actually feel like Y works better as "Canon" for them because it makes sense that the Destruction Pokémon that drains the surrounding area would be used for the Pokénuke, but i also think Xerneas going all "you are immortal now lol" was cool, so i think is reasonably well balanced between versions,. I guess that is why Zygarde went on vacation to Alola.
>>49971183Yes. Zygarde got a redemption arc at least, Zamazentas whole existence is the obvious "we need two versions" after thought they ever had.
And the funny thing is, Zamazenta looks better then Zacian in my oppinion due looking more rugged and going for darker colours. AND that is why the dogs are undeniably the worst duo, because it isn't a Duo, it is Zacian and her developmentally challenged brother.
And Urshifu shits on both of them if you count it as the Cover for the Season pass. 
