Versus humanoid / beast bosses for wr/wd : OF rules noting to debate here, otherwise ofc BFS is better by a bit and has also debuff on boss which helps tanks (decrease att speed i think), but i comes at a huge price: 25 rage.... while OF only 10.... probably it works during burst if you wanna impress friends on 30-45 sec burn bosses, you can use it, otherwise on long fights OF is the better choice. Another option would be to use it only when Aggressiveness is active (for diyce users -> buffcheck).
Warriors, more than other classes, have to take into consideration when making their rotations not only %dps of skills but also %dps per point of rage spent.