They both know martial arts, so that counts for something. TRC Syaoran's older, and most likely stronger and faster, so that may contribute. CCS Syaoran's younger, so he's a smaller target, and he also knows magic, which would definitely play in his favor. TRC Syaoran also has that flaming sword (Nietono no Shana, anyone?) and seems more adept with it, but he's also got that balance handicap going against him.
I say even match.