I never saw Bruce lee, chuck Norris or anyone on the ground at anytime. Standing up, there wouldn't be a match and they would dominate. But they have to throw and kick and expose arms and legs. One grab and roll and they have a bone or joint ready to bust or one of many chokes. Karate on the ground equals ass whipping. Karate kids and adults get their black belts, then go to bjj and get whipped badly by students that have trained for a few months. We just had 2 kids quit. Parents said they both had black belts in taekwondo and dominated sparring. Ages 10 and 12. They lasted just a few trainings and were crying after tapping out to kids 2-3 years younger and 20 lbs lighter.