At least this should teach you never to confront a trained attacker carefully planning your defeat. Karate works best when the bad guy doesn't know you're trained and makes a mistake, and you capitalize on it. Sparring is a learning experience. If you're fighting for pride or to pick on someone, you're not doing karate, and you're not being safe. Kyoshi Arthur Rabesa recommends doubling your kumite time for kotikitae.
Safety comes first.
Sometimes kumite feels just like kicks and punches. Don't get discouraged if you think your karate isn't showing. It probably is, but you don't know it. It just feels unimportant because its instinctual. Think about defending yourself.