From what I understand, they can both deal fatal blows to each other, both can inflict wounds that cannot be healed, and their LS is relatively equal.
However, Kaneki has more flexible attacks, instinctive actions, heightened senses, slow-motion vision, and a kakuja that increases speed. He also knows how to fight danmaku and actively dodges attacks. He also has better endurance and can fight even with fatal wounds that he cannot regenerate.
A battle of attrition will be on his side; he has a greater evasive toolkit and superior skills.
Kaneki FRA