CoSLAL doesn't even use 40% of the current features that Blizz-ABS has, of course it's way worse than the XAS. And I don't think you can bring up "editing the script" as customization argument because you can "edit the script" in Blizz-ABS as well. I've tried XAS v3 demo myself and I agree that it's more fast paced, but as I said earlier, you can make that in Blizz-ABS easily. Just give an enemy moving speed 5 (or even 6!) and give him the "Full Power" AI attribute and you won't even have time to react on time.
There are only a few features which XAS has and Blizz-ABS doesn't. Those are mainly the ones that allow extras like very interactive puzzles.
I agree that most people here are using Blizz-ABS and that I am getting the most support, but I'd really like it if more people would come here that prefer XAS. When I learn the most if not all possibilities that XAS gives the user, I can make them work in Blizz-ABS as well. Blizz-ABS already supports so many things that XAS doesn't, it would be a shame if people miss out those features only because it doesn't support the few they used to like in XAS.
Also, scripting as customization argument is not really a valid argument in general. Why bother using XAS or Blizz-ABS if everybody can script? Exactly that's the point: Not everybody can script. In fact, for most people even simple script edits can be a bothersome job. I have encountered people asking me in Blizz-ABS how to make a switch activated before the game over and prevent the game over. That code is like 2 lines long and only needs to be put at the right place, yet those people couldn't figure it out. My point is that if you can script a little or have a rather higher-than-average IQ so you figure out things quickly enough, you can edit both XAS and Blizz-ABS to suit your needs.
I don't know how many possibilities XAS v3 demo uses of XAS, but if you need to script anything that you have to add, then it's 100% of the original script. Also XAS v3 demo is not JUST XAS. It has several add-ons FOR XAS in there. As In CoSLAL I didn't make use of all features of Blizz-ABS of the version it actually uses and there are no external plugins for Blizz-ABS. It also supports some extra built-on features which I haven't demonstrated there, because I thought it wouldn't be necessary. I was wrong, I guess.
I consider CoSLAL using 70%-80% of the original script with absolutely no plugins FOR Blizz-ABS.
Summary: XAS demo = 100% (?) XAS + plugins, Blizz-ABS demo = 75% Blizz-ABS + no plugins