I like metal. That band you posted is elevator music tho. ;p This is metal.
It awesome elevator music then. A7X started as metalcore (Sounding the Seventh Trumpet, Waking the Fallen) but have become more melodic since. The CoD soundtrack song is more mainstream than they are known for, presumably because it's a videogame soundtrack song.
There are all kinds of metal out there, from Euro Pop Metal to Deathcore and the mainstay Thrash. The band you posted isn't one I've paid much attention to but I appreciate all kinds.