For everyone talking about how the other looks better and has a better cry or whatever, if you would have read the first post you'd know it's about which one is
better, not which one looks better, sounds better etc.
Palkia is allways better than dialga. Palkia's SIG move is far better, its faster, has a better type combo, has less weaknesses. looks cooler. it just is better. dialga is just over rated.
And what do signature moves prove? -.- Not every Pokémon has to use its signature move, you know. Lugia, for example, is much better off with Ice Beam than Aeroblast same goes for Dialga with Dragon Pulse/Draco Meteor over Roar of Time. As for their type combos, they're pretty even too. Palkia might only have one weakness, which isn't very common, but Dialga gets a hell of a lot of resistances from its Steel type. And as I've said before,
both counter about the same amount of Pokémon in the uber metagame, making them equals. And this is not just an opinion, it's a fact. -.-
What turned me off for Dialga is his cry really and the fact that Staraptor's close combat easily knocks him out.
The Dialga has to have
really bad Defense and HP IVs and probably a Defense decreasing nature as well to be OHKOed by Staraptor's Close Combat.
*edit* And why is it that people always just look at the amount of weaknesses the Pokémon have, but don't bother mentioning that Palkia only has 3 resistances while Dialga has 11 resistances and 1 immunity?