User blog comment:Trihexa/Top 10 Most Powerful Beings In The World (Unofficial)/@comment-1359322-20170327162530

You know after rechecking and rereading it a few times, i've started to think we actually had misunderstood Indra's strength level in a pretty major way. In Volume 12, Kiba mentioned this:

"He is a Battle-God that is said to have the power where all the Yondai-Maou have to combine their powers and finally they would have the power which rivals him."

And then in the Afterword of Volume 13, Ishibumi mentioned this:

"“He has the power that is equal to the whole Yondai-Maou together”"

Rather than Indra being 4 x Maou-class like we originally thought that it is. It seems like the more accurate description is Indra can only be matched by 4 Maou-class teaming up together at the same time. So Indra is actually stronger than we're actually crediting him at.

4 times stronger than Maou-class and able to take on 4 Maou-class at the same time is a major difference.