Jiu Jitsu is in so far overrated that on the street it has a tremendous disadvantage to take somebody down: His friend will kick you to the head when lying down (source: personal experience in the ground position)
On of the advantages of old style MA like Karate and TKD that "telegraph" a kick: Actually, if you "telegraph" a kick, the advantage is, that you actually can kick over a counter kick as practiced in Wing Tsun or Krav Manga (source: personal experience)