User blog comment:Zack Tan/Volume 7 Intermission/@comment-26501532-20150903085747/@comment-138.162.0.43-20150903142624

We don't know what exact level the Greed Kings were (only that they're more than 85+), so arguing about if they're stronger than Shalltear/Ainz is only fan theory for now. We don't even know what rank the Greed King guild was in the Yggdrasil MMO. Once that information is revealed by the author, we can better estimate power levels.