User blog comment:Xilinoc/Ch. 589 - The Shooting Star Project: The Old and New Trust/@comment-24384892-20140716152243/@comment-5693502-20140716185355

Mayuri is way too clever too be killed off anyway. Not unless Giselle has some unbeatable/unexpected hidden ability tucked away in her Y-fronts then I'd imagine Mayuri possessing a plethora of strategies on hand to ensure his victory (or at least ensure he doesn't die). Not to mention, of all the remaining Shinigami, Mayuri is the only one who has fought against and somewhat studied a Quincy (before this arc had even started) and he is arguably the most knowledgeable person on the subject of Quincies (barring the Quincies themselves). So it would seem ludicrous (to me at least) for him to be killed off by a single Quincy.

Though I do agree, I think more of the Gotei guys need to die justified deaths at the hands of the Ritters.