>>54918433I think design wise, Reshiram definitely fits him better. They even use Reshi with him in the advertisements.
However, from the perspective of what each dragon- it seems wrong for him to have the dragon of "truth" when his entire life is built on lies. Built on this ideal that pokemon need to be separated, with the crux of the game having you shatter that ideal of his. Your truth breaks his ideals. It makes much more sense story wise at least.
However Zekrom looks so ugly with him so it's hard to say.
