User blog comment:Pualover/Overlord Power Level/@comment-115.72.10.60-20160502114438/@comment-4875206-20160502133222

If I remember correctly, the JP raws says that he is much stronger than Solution. It was Shalltear who estimated this, so we can't be really sure because she doesn't has a skill like Aura that allow her to analyze the enemy and she was not in her best state of mind when she encountered him. He might be 5~7 levels higher than Solution (this is usually a big gap in RPGs) or simply has better equipment.

I think ZZ is stronger than just a level 70. According to the Captain of Black Scripture, she is overall weaker than Shalltear but would win if she was fully equipped with her godly equipment while Shalltear is unequipped. She might be a level 80~90.