Ben Kenobi vs Darth Malak

All-out fight, to the death. Fight takes place on the Death Star.

Who wins and why?

Not sure, leaning towards Malak.

Malak, convincingly

Obi wan kills the Vader wannabe

RotS Obi-Wan wins.

ANH Obi-Wan gets his ass beaten 6 ways to Sunday.

Doubt it, tbh.