Last night I ran Fractal with another bard (yes 2 bards). I never used WM as he had WM up all the time. Almost same gear, I had a 160 sash while he had 160 hands.

Result: I literally crushed him. I was always at the point of pulling aggro from tank while he was always in 4th. Sometimes I let him killing a mob alone while I was on another of the same kind. I killed mine while the other mob still with +25% hp left (and I was using RoD all the time instead of BL).

Unless he is a terrible PoS Bard I cant find a single useful situation for WM but to burst only. Every single time I try to use it my dps drops drastically.