User blog comment:Xilinoc/Ch. 640 - BABY,HOLD YOUR HAND 3 (Mad Lullaby no.7)/@comment-5657895-20150827133130/@comment-11051098-20150829165731

Pernida is one of the Sternritters that has interested me the most since its introduction because the hooded cloak showed off nothing and left its appearance to be imagined. When it was revealed to be an arm, it was kind of a "dafuq" moment, but it really has shown itself to be quite a fighter, at least after its power-up from the Auswählen.

I don't know how many chapters Mayuri vs. Szayel lasted compared to Mayuri vs. Pernida, but all together I get the feeling that Pernida will last longer against him than Szayel did. But either way, Szayel basically used tricks to wreck Mayuri before the latter revealed he had replaced all his organs with dummies, whereas I'd say Pernida have used more physical abilities and attacks.