Is this really a competition? Blizz-ABS completely pwns! It has to be the very best ABS I've ever seen, and I've tried QUITE a few, including XAS. Sure, XAS is fine, but it's nowhere near as awesome as Blizz-ABS. They have basically the same features, AND Blizz-ABS is so customizable, a hill-billy could do it! MY HAMSTER could do it! MY FORK COULD DO IT! (Ok, maybe not my fork. But, it has suprised me in the past XP)
XAS- 9.9/10
Blizz-ABS- 44/10
Neo-ABS- rejected >:3
Yayay!
And yes, I know next to nothing about scripting, and even I could customize it to suit me. If you can customize every aspect of the game, and has as many features as the so-proclaimed "best ABS ever", doesn't that make it better- or at least pretty damn awesome?