SPOILERS I GUESS
For what it's worth:
1. The "death growls" are probably technically not death growls. They are definitely harsh vocals, though, and that short segment of The Architect has a definitely nordic metal feel to it so they fit well, more so than on Aquarius IMO (though I still thought they were fine there).
2. This time the harsh vocals are provided by Einar Solberg of Leprous, so they sound VERY different to the Aquarius growls.