The thing about ASU is that it takes a loooong time to comprehend, but once you start putting it together and making sense of it, it becomes clear how brilliantly composed it is. Every section has a purpose, and all the different elements contribute to the greater whole. There's an insane amount of intentional technicality, yes, but that doesn't change the fact that these are, at their heart, exceptionally composed songs. Compare this album to something like the Behold... the Arctopus album, which was literally just random notes with no meaning, and you'll see what I mean.
EDIT: Another band that demonstrates a level of compositional skill close to SA's level is Zero Hour... another great band any Watchtower fan should look into.