I'd say its a tie.
Since Luminara is a Form III practitioner (Soresu), and Shaak Ti is described as a calm and non-violent being, only drawing her lightsaber out when necessary (mentioned in the comic : Shaak Ti), they would mostly tie. But it is also said that Luminara was able to match the skills of Count Dooku.
Originally posted by Darth_DaNThEMaN
i say luminara, and she was a master, u cant be on the council if ur not a master(besides anakin)
Nonsense. There have been many Knights on the council. Ki-Adi-Mundi was a Knight, Anakin of course, and I think one of the Jedi from KOTOR on Dantooine was a Knight, I dunno why, I just always thought that. And obviously in the some 4000 years in between, there surely had to have been a Knight here and there.
Originally posted by Darth L. Dipsit
Since Shaak Ti, according to Wikipedia (see the site below), was a Jedi Master at one point, and Luiminara apparently never made it past Knight as far as we know, I think Shaak Ti would do it.
😬
tough call, but i would say shaak ti
Originally posted by Ianus
You forget that Obi, a Form III user, kept up with and beat Anakin, a form V user of better talent then Shaak Ti.
Did you really think Obi-Wan used Form III against Anakin on Mustafar? Anakin and Obi-Wan fought beside each other in many battles during the Clone Wars. Anakin could probably see Obi-Wan's weak spots.
I heard that Obi-Wan used Form IV on Mustafar. But personally, I think Obi-Wan combined Form III and Form IV because maybe Anakin rarely or never saw him use it before since Qui-Gon's death.
Kinda like combining Form II and III to create Form V, and Form IV and V to create Form VII.