User blog comment:Theformerprez/The Weakest & Most Useless Bankai's In Bleach/@comment-26269901-20161113175640

Most bankai here are not weak and useless, just suffering from poorly written story and overpowered enemies. For example, Kyoraku's bankai against an enemy that isn't regenerating constantly would have spelled certain doom. Even Ise magical paddle couldn't take down sniper dude for real, despite being a legendary weapon. All the top Quincy were ridiculous in their regenerative abilities, to the point they were unbeatable through ordinary battle. Mayuri got lucky against Pernida with Nemu saving him and her just happening to have that cell destroying thing, Gerard had to be taken down by Yhwach himself, so they make poor example of how strong a bankai is.