Man, I forgot how the interface looked on the console versions of the game. I'm curious as to why it has that name, though, isn't that Azurewrath?
As to why they would all be using one weapon though, it's the symptoms of each balance patch. Players find the most efficient set of gear and weapons, and that's the go-to for everyone to use. The players who have those super high levels, with identical gear, that's all they do. They run the same things again and again, to get better versions of their current gear. It's not about playing the game anymore; It's about refining the things you already have to a diamond edge.