IMO, UQs on the BB are "different" (not worse or better) because of the more distinct diagonal. I use a 2/3 UQ + ccf pad under my legs in all seasons...(my winter UQ is cut asym) it just works better for me. A full length UQ is tricky around the footbox.
Compared to a bridge (I also have a BMBH), my winter Warbonnet Yeti is diff/asym cut and doesn't fit a bridge as well as a gathered end hammock. My other rectangle cut UQs work equally well 3 seasons. The rectangle bridge is easy to fit a rectangle UQ on. Again IMO, a bridge would not work well with darted UQs