Is CG supposed to be Code Geass? Code Geass was produced by Sunrise. Guilty Crown was produced by Production I.G., the studio that produced Attack on Titan.
haven't seen CG, so I can't make any comparisons other than there are mecha in both.
Guilty Crown has an amazing OST and high production value as you can tell from its stellar art/animation. You'll probably like the first several episodes.... maybe even enjoy the whole first half.
But later on the series you'll realize that the plot drops down to "garbage" level. Some liked the ending, some did not. For me, there were hardly any likeable characters, and those who I found decent died. Oh yeah, and the MC is one of the most hated anime protagonists.
Actually, why not. Go on ahead and watch it.