While I would never post "best whatev's" spec, my spec's would probably drive you crazy since I just play what weapons I like rather than worrying about the damage output as long as I'm keeping up. Warhammer may not be the best dps for a guardian, but I like seeing how far things fly when I smash them...
I'd suggest a copy-paste folder with a canned response. "While some folks push the LB thing, it's certainly far from top DPS as shown in a lot of places, including (link to some place that illustrates)".