Do you have both or ride both? Cause if not, where do you get this info from dude? And what do you mean by performing, they are different types of skis, so there isn't just a better ski buddy.
Here's my deal ohioskiier. I ride AR5's. I used to ride the 1080's, last years. Now, I know they are different and the foils are better, but the AR5's are the best ski I've had. They are very sturdy, VERY. They can definitely rip it outside the park, especially if you are doing east coast stuff. I am about 60% parl and 40% out and I have zero problem. THEY WILL PERFORM BETTER IN PARK. Better on rails, riding switch, and all that stuff. The foils might carve a little better outside park, but they aren't as good in park. Plus, it's not like we have huge powder days. If you are a good skier, the AR5's will more than sevre the purpose outside of park. I love them in and out of park. They arem't sloppy to freeride in. Also, the AR5's will alast longer and are stiffer. The foils will fall apart under you. My 1080's loosened up way too much when I skiied them cause of the foam core. I know this form experience. So, from my experience and your usage, AR5, no question.