How powerful Bell really is has been a question that has generated a thousand debates on the wiki, yes, we all know that he has a boost due to his statistics, but the magnitude of it has been a topic of controversy, how could it not be? when the author has deliberately maintained ambiguity in this regard, giving information only in relative terms which will always lend itself to subjectivity.

However, I was watching the drama CD where Bell travels to the past and meets the Astraea family and after spending time with them he decides to defeat Evilus himself, as it is, he defeats the Dis sisters without killing them and hands them over to the guild.

This fact tells us that Bell is capable of defeating 2 adventurers of his same level, which seems to me to be conclusive evidence that Bell is the most powerful of his own level without the slightest doubt. I think it is important to point this out because although it seems obvious, I had debates with users who thought that Bell could be defeated by some other level 5 with less status but more experience, however this fact refutes that postulate.

In addition to this, it provides other significant information regarding the importance of the level, that is, by direct implication we deduce that Bell is much stronger than Hedin and Hogni were as levels 5, but we have seen that when he trains with Hedin, he is still weaker than him, therefore, it is evident that the level is what weighs the most, much more than the statistics.

I know some will say: "it's a Drama CD, it's not canon!" Sure, the story evidently isn't, but does that necessarily mean that the details given in it are false? I don't see why Omori would lie about it.