Saber skills = Shaak Ti (she uses Makashi, THE saber dueling form, while Kit uses Form one, which I don't think is that great with dueling).
Force Skills = ?
Battle Experience = Both were High Generals in the Clone Wars. Kit dueled Asajj and lost - Shaak Ti fought like a dozen Magnaguards and was winning (which was bs), fought Grievous twice and lost both times, and defeated Dark Jedi Artel Darc.
So, as far as I know, Shaak Ti has betetr dueling skills as well as more dueling experience. So I say that she wins in one hell of a battle.
I think you misinterpreted what happened. They were trying to do as much as they could to keep her away from Grievous as she was the biggest threat - killing her would have the same effect. They were distracting her, but by definition that wouldn't mean that they weren't going for the kill, just that the least they could do would be to hold her back; killing would be an added bonus. There would be no reason for them to hold back - they just had to keep her away from Grievous and killing her would ensure that.