User blog comment:B214/Question and Answers 6/@comment-2607:FB90:602B:5C13:E835:4052:FCDA:7AE0-20190202193528/@comment-10330822-20190203225944

Agreed, Vritra is probably top-tier Ultimate-Class.

Sorry, no. He was Ultimate-Class at best. Remember, Balance Breakers aren't designed to use the fully power of its source, and Saji doesn't use anything that exceeds his power source like Issei and Vali do.