well I had a great long speech all written out and ready but my new 8 week old cat just spazzed all over my laptop (he's in the mood to play) and made the page go back lol
So to sum it up, yes I think the new album is better than 13's Reborn. I think they have grown up musically since their first album, but also "Girugamesh" is a different type of album than 13's was. Also I first discovered giru when they released the mini album Reason of Crying and didn't hear 13's until much later so I never really liked 13's Reborn as much as their newer stuff. Still an awesome album but I have a slightly biased outlook lol.
Really for me the only negative thing I could say about this album is that most of the songs are too short, it's truly an awesome awesome album!!