Rapid Fire and Maul Damage
Full glass I once pegged a Thief for 21k Maul. Again full glass I also killed an Elementalist with a 24k Rapid Fire while I was standing on the walls of a tower and every arrow hit.
.. Even with those numbers, not worth it to run full glass IMO. This is speaking from a WvW perspective and I have long since moved on to a trapper build, to which I still use to this day.
Also note that those numbers were pre-ferocity changes.
Necromancer, Ranger, Warrior, Engineer
Champion: Phantom, Hunter, Legionnaire, Genius
WvW rank: Diamond Colonel | Maguuma
Champion: Phantom, Hunter, Legionnaire, Genius
WvW rank: Diamond Colonel | Maguuma