Man these last few pages have only been about Ice shard which it doesn't even get, and Hydreigon. CB calcs are great and all, but there isn't much point in comparing Kyurem-B in terms of raw power to Terrakion and Garchomp, which boast better speed/boosting moves. That's never going to be the reason people consider it to be broken. Pokemon hit harder based on the BP of their moves, not so much their attacking stats. (Kyurem-B does get Draco Meteor, Ice beam, Bolt Strike(lol), Earth Power, Focus Blast, and of course Outrage)
I feel that more defensive sets, like the Sub/Roost/Dtail/Ice Beam set (specially or physically defensive) are particularly dangerous against all teams but maybe not HO so much. 120/90/100 defenses are incredible on a pokemon that has the same attack as jolly Terrakion and Modest Starmie with zero offensive investment and a fully bulky spread! Stall teams can't break the substitutes, and can't even phaze quickly enough as 95 Speed is very fast against bulky stall teams. Even balanced teams struggle against bulky Kyurem-B, as once their hard hitting fighting type is gone, (or specs latios) they can't break subs and they get shuffled/stalled out to the point where every mon can be cleaned up by a sweeper. Checks can't even be switched in due to the threat of Dragon Tail which forces even more switches due to the threat of Ice Beam/Dragon Tail behind a Sub. CB Scizor fails to do more than 50% to physically defensive Kyurem-B who can easily Roost out a predicted Superpower, switch out at near full health if BP, or take the BP and Dragon Tail Scizor out, guaranteeing it comes in around 40% health next time if Spikes/SR are on the field while still forcing a potentially disadvantageous switch(don't forget, on top of all this, Kyurem-B will still be around 50% health) This pokemon functions so well with spikes/SR and worst of all, Toxic Spikes, I'm shocked by how easily it cleans up teams. SubRoost can PP stall out Gyro Ball, Stone Edge, and even 16 BP moves like CC if Toxic Spikes are on the field. With Toxic Spike support, Kyurem-B is actually rewarded for Sub/Roost. I think the combination of absurd bulk, terrific mixed attacking stats, and more than decent physical/special movepool(STAB Ice beam alone would be enough and its support movepool is incredible, end of story) make Kyurem-B a broken pokemon. Until it's banned, I'll take full advantage of all of this, and of course, the switches it forces.
edit: grammar
edit 2: and I haven't even talked about Sub/3 Attacks
edit 3: after talking with Spinda, I would have to concede that CB Outrage is ridiculously powerful and that there is a huge difference between it and CB Garchomp's Outrage, but in this offensive metagame,(offensive teams handle band better, stall plays around it) Scarf is usually better due to Kyurem-B's not so stellar 95 speed and its SR weakness. Too many pokemon can switch in and threaten to KO, many without SR. (OU pokemon (not listing UU) Garchomp, Terrakion, Latios, Latias, Hydreigon, Salamence, and Ferrothorn with some Atk all KO, while Scarftar, Keldeo, Scarfzone, Volcarona, Breloom, Scizor, Conkeldurr, Alakazam, Gengar, Infernape, Jirachi, Thundurus-T, Conkeldurr, Tornadus, Victini, and Scarf Landorus-T.