I do not think I would say that it is "better" than the biscuit but rather different. If you shoot straight fletch or a slight offset then you may be able to get perfect clearance through the rest especially with short vanes.

Last year a friend of mine came up to the shop to BS and we decided to set up the WD and WB on the same bow to see what effects they had in comparison to a typical prong style rest. Accuracy was very comparable between the 3 rests. Noise levels were better on the WD and WB because of their materials but there was a speed reduction on both the WD and WB with the arrows being used. The WB only saw a modest reduction of 1-2 fps while the WD was a little bit more at 3-4 fps.

Hope this is what you were looking for.