Luckily for you, I own disorderlys and have used ar6's. The ar6's are stiffer I'd say, probably lighter, and do better on carving and whatnot which is expected. With the small bit of park I skied on them, I thought they were good. I like the disorderlys better since they're softer (I like skis like that) but they don't wash out at high speeds, and I've never washed out on a landing due to my skis being too soft. Both have nice pop, I feel like the disorderly is a little better on rails, feels like it goes on easier. I can't speak for the construction of the ar6, but my skis are holding up great, edges are flawless and I do lots of rails, bases are fine too. Topsheets chip but that doesn't matter.
All in all, I don't think you're going to go wrong with either ski, it's mainly between flex and dimensions at this point.