It's interesting you should say that when the second top option is the standard Dire Stable, Stomp, Bestial Fury, Crows and Killer Cobra we've been rocking since the start of the expansion.
AMR shows a large difference between talents choices. Old standard DS, Stomp, BF, Crows and KC as 642k where the 'new standard' WotC, Stomp, BF, Crows and AotB is 659k. BGH, Stomp, OwtP, Crows and AotB climbs all the way up to 675k where swapping AotB for KC lowers it to 670k.
I don't know why there is such a large difference between the two sims (ignoring actual DPS numbers and just focusing on the % difference between talent picks from your sim and AMR's). I use AMR for ease of use since I'm not hardcore nor in an hardcore guild.
I feel that the gains are minimal. 20k is nice but put in perspective when doing 600k+ it's not huge, and that's when I feel that common sense and generalized use becomes more important than a niche. BGH seems great on a big bag of HP where the 80% phase will last for a while, but the first 20% of a fight isn't particularly important (reverse rational from glyphing Killing shot, or whatever the name was back in Cataclysm, the shot that only activated when a target was at -20% HP, which was that at 20% was when we needed to push and raid members might be dead, even if meant on progression fights where wipes happened pre-20% made the glyph useless). It's not particularly useful on adds either since they are usually of lower HP and will quickly get under 80%.
I have a hard time deciding with OwtP. It is based off RNG which is ugh, but it gives more procs of Dire Beast which is yay. I can still get behind it as I happen to be one of the lotto winners that got the Mantle which means no wasted procs. Without it I would have stuck to Blink Strikes. With the 4p and the Mantle it synergizes well and more importantly it will work everytime, everywhere, on anything.
WotC and Dire Stable are harder to quantify. We're going to throw a lot of Dire Beasts anyway. Do we want more ST or do we want more focus? I'm leaning towards focus. With more focus we can throw more Cobra Shots which kinda evens out. WotC is simmed higher than DS on pure ST though, obviously but in an AoE phase where we don't touch Cobra Shot but will be using Dire Beast on CD the extra focus will be used where WotC will sit useless.
KC and AotB (assuming AotB is properly simmed with AMR since there was a bit of a snafu with it a couple of weeks ago) is simple: burst VS sustain. For short phases like killing important adds bursting is more important. I'd mention Skorpiron's vulnerable phase but that's one boss out of an entire raid.
Using AMR's Ursoc heroic to sim will favor all the sustain talents but the more generalist talents seem to fit better for more situations. A proper hardcore player will change talents according to the fights, of course.