Your argument can be summed up as "I play heavy offense almost exclusively and I never have trouble with Kyurem-B. Heavy offense also does not use Kyurem-B [untrue btw], therefore it's not broken", ignoring how ridiculous it is against defensive playstyles.
What the hell do next month's stats, any potential core, and especially the Fairy type have to do with any of this?
No, my argument is:
A) OU players and their decisions didn't create the BW2 bias towards offense (and the inferiority of defensive playstyles), Game Freak did and they are trying to fix that with the new fairy type and other patches.
B) Kyube didn't have any major influence on the direction of today's metagame, is handled rather well by offensive and balanced teams, it's counters are readily available, weaknesses plenty and as far as choices go most opt for other sweepers (as of June Stats).
Edit: I'd like to see a response from the pro-banners side on alexwolf's anaylsis of it's set against the 3 major playstyles, thanks.