Judo used correctly is as good as BJJ as you can see.
Judo is deadly if used in 'non competitive' fighting as well. How?
Watch the video above and imagine being thrown in the street?
In MMA and UFC you may have the chance to 'tapout' after being thrown on the mat!
Most people today only see Olympic standard judo, the true movement in a throw is to lift and drive your enemies spine into their head as you slam them hard to the floor. Now watch that video again!
Judo is excellent for self defence. Competitions depend upon the rules of the event.