I posted that, because you all forget that hunters ALREADY ARE the single best pure DPS class. And I already see more SV hunters than BM in bgs, they already do ~300-500 (including 1 or 2 crits) with ES in total (in semi-BiS gear obviously) now make BM unplayable and you'll only have SV in bgs running around shooting 400 ESs on you while spamming Arcanes for 200s (they're already at 100/200 crit easily) and don't forget they still have Scatter, Conshotspam and Pet Abilites, not forgetting Track Hidden, Disengage+mountspeed and Hunter's Mark for extra AP.
The 10% AP buff itself is not the real problem, the problem is, that Blizzard is buffing an already strong class...