That was some good Shotokan Kumite but they seem to have basic sparring faults they posse too much and they don't know how to use circluar foot work as a defense or offense. They posses with there hands and keeps their leg cocked at knee instead of moving to another position.
That was a good display of Kumite but at black belt level the straight in an out assaults are Karate trapped in a method. If they fought other full contact styles this would get them in bad trouble.
I did see some strong basic, alot of slipping and hell you shouldn't have, nice sweep and throws. Lots of striaght strikes not many circle ones. It looks close to how our 1st level at the BB level is done except we use circle strikes and evasive footwork to atatck and defend.
Years ago what I found was that instead of always the long powerful strikes, pending range use the shorter strikes and as he falls away use the longer powerful strikes. When I 1st started sparring full contact these guys could hit me five times to my one powerful strike. You got to learn your range and how not to crowd your effective striking distance. Learn your effective punching/striking range and when to adjust the strikes.
I'm not knocking this clip it was exciting and indicitive of the strong Shotokan practictioners that I've met they give and take contact well. But they fight straight forward with shallow angles.This great clip can show how you can be trapped in a method good or bad. I enjoyed the kumite it was tough, looks like Shotokan that I've seen. Tough folks.
Not only Shotokan other Karates are trapped in methods especailly the dojos that have closed events.