Kyurem-B's usage in OU has nothing to do with Ubers. Also don't be silly, Lugia does check Kyurem-B with Toxic which is Lugia's main move, also phazing isn't checking then what is, since you never going to kill Lugia anyway lol. How is Kyurem-B beating Kyogre easily? You are 2HKOed by Scarf Water Spout.
Reflect easily foils that KO which isn't even guaranteed. More like your set always loses to Lugia one-on-one. All Lugia has to do is Toxic you, Roost off the damage or Reflect next turn, and phaze you out when needed. If you Sub, Lugia puts up Reflect first and Whirlwind you out. It can just Toxic you when you come in again.
Kyurem-B is inferior compared to Zekrom overall because Kyurem-B only has STAB Outrage as a powerful move and weakness to hazard sucks.
<&GreatSage> if nothing else it's a "trickroom teaches pokemon" thread
<&GreatSage> which is reason enough to keep it
<@Colonel_M> I once heard Jibaku considered Scarf Gyarados for his Ubers team
<syrim> Trickroom the ultimate synguuest