Kakashi has lighting blade and he can use it to defeat Kurenai. Kurenai is just not strong enough to win this match. Kakashi is too powerful. Kakashi also has his ninja hounds who can win the matches for him. Kurenai just can’t win. Kakashi wins.
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Not just that, with his Sharingan he could copy her every jutsu
True, she just wouldnt’ have a chance. It’s too bad she never got a win in the manga. The Author just ditched her. Of course her whole illusion thing was overshadowed when Itachi came along