I agree that JJJ is much more similar to Judo than BJJ. I used to take Judo while I was a teenager, and recently I've started JJJ. There are quite a few similarities in both. They all grew from the same root after all. The biggest difference is JJJ focuses more on stand up locks and throws, while BJJ is mostly groundwork.
Is JJJ useless as some put it? No. Some moves are outdated though, but you get that in all martial arts. Everyone seems to jump all over the BJJ bandwagon because of what they see in MMA. And while in controlled environments BJJ is king, the last thing I would ever do in the street is pull guard, or take the fight to the ground at all. Too many things can go wrong.
Anyway, there is always good and bad in all forms. Like Smaciman said, a lot depends on the instructor. Some will teach the traditional way, with all the outdated moves, while others will focus on what works and forego the rest.