Every deck is just Dragonite but better.
Charizard EX/Arcanine EX just sits behind a phat chicken wall and builds energy until it can one shot you.
Gyrados EX just sits behind a spiky wall and builds energy until it can one shot you.
Mewtwo EX just happens to be the wall but also builds energy until it oneshots you. Or it hides behind Mew EX and builds energy to one shot you.
Going off the logic of Mewtwo EX, Celebi EX and his big pistachio head is also a wall that builds energy to maybe one shot you.
And then there's Alakazam which also hides behind a toxic wall and builds energy while abusing the fact that you are also building energy to one shot your one shotter.
And we can't forget Mew EX who is both the wall and the thing that can copy the one shot move off of your one shotting pokemon to one shot said Pokemon.
And if 90 damage every turn from Pikachu EX wasn't enough, it too can use its fellow Pokemon and fleshy meat shields or walls to power up an instant KO with Raichu.
And then Dragonite has to sit behind a wall and pray not only to be graced with the right energy but hope is aim is well enough to end the game with Draconic meteor.