I don't think Bane, Nilhius and Revan are overated because we don't know...there are just as many people willing to say they did many things as there are dening it.
however, i don't think Bane knew everything about the force and i don't thing Revan was anything as good as someone like Vader. but it's ridiculous to say that Nilihus was a bad swordsman or that any of these were weak.
simply because i don't think your right, ...if someone talked to you and you and told me their opinion it doesn't make it right...If i said it's right it doesn't make it right...and just cus 2 people say it's right (if you remember your rights and wrongs) it doesn't make someone else wrong.
formula: right + right (not =) wrong
i'm only telling you this because on the expanded univere forum all they do is say things and have people agree with them but it's not true...i just don't get why you guys fight when there is no answer....