User blog comment:B214/Question and Answers 6/@comment-2607:FB90:603D:5340:4082:7A47:2AEA:26C5-20190115200556/@comment-10330822-20190116063319

That's why I said "Upper" Satan-Class. He's Satan-Class because he defeated Bedeze, but that doesn't mean he's at the height of what a Satan-Class is capable of. After all, even though he was Bedeze was Satan-Class, he doesn't hold a candle to Diehauser, who is also Satan-Class.

In other words, Sairaorg could very well get significantly stronger, and still not be stronger than Diehauser. But at the same time he could, that is why I said "maybe Super Devil-class"