I would say that the CCC hacker conventions (esp the CCC congress always in December) are somewhat more famous (but that probably depends on cultural background), of a similar size, and "better" (depending on what aspects you want to compare it). But it's not really a competition anyway.
Related to that, there is the CCC camp 2019 (https://events.ccc.de/camp/2019/) (in Berlin) starting very soon. Probably there will be live streams. And btw, a while ago, you could buy a combi-ticket for both DEFCON and CCC camp, including the flight ticket, for either 1337$ or 1337€.
If you have never been to such an event, I can really recommend to go to it. Actually I can only speak for the CCC and the Dutch events; I heard that the community and mood is much more friendly and open on CCC-like events, compared to DEFCON, and also the focus is much more widespread, e.g. it's also kind of an art event, similar to Burning Man.
That trends shown in the traffic graphics are really interesting. It seems JavaScript are less interesting to hackers, and Python is more. What hackers are using today is often what the remaining technical world will use tomorrow. In a similar way, I observed that around 10 years ago, Apple hardware became very dominant on such hacker events (I feel like maybe 80% of the computers (of course I don't have exact numbers on that)). But in the recent years, that totally vanished. It's very clearly the minority now. Apple does not produce the preferred hardware for hackers anymore.