User blog comment:IamJakuhoRaikoben/Chapter 496: Forward, Review./@comment-4449950-20160802062620/@comment-26167397-20160802063644

No I think that depending on how powerful the Historias were when they were alive determines how strong they'll be as the Living Dead according to how strong Neinhart is. He did claimed that 3 Spriggan Historias took a toll on him so it does explain why they're weaker than before but compared to the other Historias, they got their strength when they were alive considering doing them is a peace of cake for Neinhart.