1. They're about even in raw talent with a blade, although Jaina has the edge of using a form which isn't among those taught to a Jedi, so I'd give her the slightest of edges.
2. Jaina's raw power definitely exceeds Ulic's, although with trinkets it could be about even.
3. Probably Jaina by the skin of her teeth.
Jains is a solo and thus has Skywalker blood and can only be defeated by her family and Darth Sidious. Ulic is a droma no his biggest feat is being a match for Exar Kun a worth adversary and powerful person but not someone on league with people like windu and dooku who are not on the level with Jaina IMHO.