Do NOT click on any vaporpedia.com links. The domain has been compromised and will attempt to infect your system. See https://fuckcombustion.com/threads/warning-vaporpedia-com-has-been-compromised.54960/.
Just glanced briefly, but it looks like the difference is quite significant. The Glyph actually projects the image onto your retinas, there is no screen involved.
I'd definitely like to see some more science about the effects before I strap one to my head though. That said, if they do work...