Ascend, probably would beat the Emp, but I'm not sure why you think the Aperion would be so much better either. I have to confess I haven't heard any of the speakers being mentioned, I can only base my opinion on reviews and specs. However, that being said the emp and the aperion are pretty similar on paper and are in the same price range. Given the high praise Aperion has garnered from audioholics and owners, I would guess that the Aperion would probably sound better, but not head and shoulders above. However, thats just a guess.
As to the ascend, I would guess that the ascend beats both of the others pretty handily, RAAL or not, but especially with RAAL.
In the end this is all conjecture and amounts to exactly squat and besides the main point of the post you quoted was to say that if you are seriously considering the ascend with RAAL there are a few other options in the price range that should be taken into consideration.