Spam deleted.
For everybody's information's sake: multiple posts addressing the same issue are considered spam since you can just edit your own posts.
Posts that are off topic are also spam.
Posts that have no purpose are obviously spam.
Also to the "one is easier to catch than the other"
It's all luck: they both have the same catch rate, you just got luckier with palkia than you did with dialga.
And to add to that further: Dialga's cry is so weird... not fitting for a majestic "time pokemon"