User blog comment:Tekkphreke/Blut Vene and Blut Arterie/@comment-1268838-20131212185055

Strictly speaking, we don't know for certain whether these Quincy have been using Blut Arterie by default or not. I like to think that now that the overall concept has been explained pretty thoroughly (much more so than Hierro, anyway), it's being used without it being pointed out every single time.

At any rate, the power levels among the Sternritter have varied wildly, without any definite ranking system. Quilge is likely stronger than some, and weaker than others.