Originally Posted by Fat Princess Bri
I've found Specs Palkia to be such a letdown since the release of Kyurem-W. Kyurem-W's Ice STAB really shines when running Specs, although it cannot check offensive Kyogre. If you're desperate for a Water Spout switch-in, Palkia is your go-to dude, but otherwise I'd definitely run a Kyurem-W.
Specs Palkia is good, with or without the prescence of Kyurem-W. While its true Kyu-W has more power (at least on paper),
#1 Palkia is faster, those 5 extra speed points help it check base 95s like Kyu-W itself (and maybe non-scarfed Genesect?) as well as non-DD Rayquaza
#2 Under rain, that Hydro Pump is boosted to stupidly powerful levels (rivaling the damage output of Kyurem-W's Draco Meteor), and that's even more scary considering how few people expect it coming
In short, while Kyurem-W might be better as a Specs user in general, Specs Palkia is certainly worth a try if one is using rain.