Ignatious gave way more detail than necessary, but was right on. Wager/Psy Lock beats the deck. The match up is easily 70/30 or higher in Gallade's favor. It doesn't matter what you tech your deck with, it's not going to be able to compete with it.
I'm not saying this because I have a personal attraction to Gallade (even though Gallade is sooo hott!), I'm saying it because that is what the testing has proven to me. If you disagree, that's fine. Like chriscobi634 said, going back and forth is never going to resolve anything. You, and the rest of the people that disagree with the match up can take or leave it. I'm just one more person that has tested it and agrees with the way they broke down the match up.
As for states, GatrCat variants are tough. The combo is very solid. Heck, I would have been playing it during the CC's if I wasn't convinced it has such a horrible match against Gallade. It will be a meta game decision, and the new set is certainly going to shake things up. Personally, I don't think the format will be ripe for it, but with a new set coming out and only a month to get ready (and only 2 weekends of States!) you just never know.
Hope you have a great time at States