Fate in Bleach: Unlimited Blade Works!

In Bleach, with mediocre talent, the protagonist has been flatlining for thirty years. But with the sudden completion of the Zanpakuto conception, he has become a “sword person.” Unlimited Blade Works, essentially “unrestricted swords.” Since Soul Society does not allow two identical Zanpakutos to exist, then I just won't use my Zanpakuto, and that should be fine, right? Who is the strongest in the Zanjutsu category: Zangetsu or Zangetsu: Black? Who is the number one in Assassination Techniques: Ichimonji or Suzumebachi? Which is stronger: Kinshara or Senbonzakura? Can the Yami no Tachi Shura and Yami no Tachi Rasetsu compete for the title of the strongest Zanpakuto? Unlimited Blade Works, essentially “swords,” all the “swords” in the world are mine. Yamamoto, even you, the head of the 1st Division, “Black,” cannot take away my “swords.”