Longevity is definitely a big player here, AD08s you can supposedly get 30,000km out of a set which is fantastic for what type of tyre they are.
But in my opinion I think the AD08s are better tyres due to the sidewall. They're much stiffer than the RS3s so they're a bit more predictable when it comes to breaking traction. Where as to drive RS3s fast you have to be on their limit which is a lot more "wallowy" than the AD08s, if that's the right word. To boot they seem to have more grip as well.