Blizzard has acknowledged before that BM isn't a raid viable spec (though we've seen that in the right circumstances they can pull their weight, though still be far behind) and they've stated that they would like to get to a point where all three hunter specs can raid. Ghostcrawler gave us one idea at what a BM buff could look like, saying, "The damage would have to be more of the slowly stacking / sustained variety..." and also gave us a peek into where they think pet damage should be -- at about 30% of hunter damage in high end gear."We don't want to buff the pet damage for BM any more for a couple of reasons. One is that it puts too much dependence on the pet... Secondly, the pet doesn't require that much babysitting. Few players are clicking their pet abilities on and off. As such, it just acts like a dot with cool art. When we talk about the risk of BM being too easy to play, we don't want to over-reward players for just doing Steady and having the pet attack."
However, today's comments make it sound like they aren't likely to just let BM do MM-level damage with their current play style. If BM wants more damage, they'll probably have to work harder for it.