You know, there was once a time where I thought wikipedia was a decent source, but more and more I'm finding out about things that are on there that are sometimes really badly sourced. Some pages like "Critisizims of Islam", around half of the critisizims source random websites, blog posts, or they source pages or books that are opinions, and a lot of the shit on that page is completely wrong. They don't source the Quran!!!
So really, I take anything on wikipedia with utmost caution. What you've quoted to me looks like an opinion and not a fact. I've listened to the album countless times and maybe one or two songs have a power metalish feel, but I don't consider the album to be a power metal album.