I'm likely one of the least liked mods on this forum, so no I'm not really trying to be cool. There could be a potential misunderstanding here but whenever I play during peak times during the weekend then the wsgs are great, I mean really great and this comes from a guy that has probably played over 300 wsgs just running the flag back and forth while also playing in top notch premades.
In the last 4 years that I've played against horde, they have always been worse than alliance but since the "big transfer" the ratio been going up and down for both horde and alliance but
overall the BGs have been great and even.
Your entire premise is that in the last 2-3 weeks, alliance have had a few more hunters and if we assume this is correct even if I disagree with it, then I'd say that's only "natural" since horde at many have been absolutely terrible for an extended amount of time, which encore would agree with. Meaning that the ratio of good players go up and down at different times, depending on unknown factors but I say 100% that the bracket is getting better.
I'll likely edit this post