if Physical strength became a factor, koon owns...Koon could win in a saber battle, he survived Geonosis, shows he had some skill. I like how he uses almost dark-side abilities, should have shown them in the movie. I think Maul could be screwed here...could go either way in any case but I like Koon FTW.
Myself and someone else have alredy had a thread on this.
http://www.killermovies.com/forums/showthread.php?s=&threadid=342860&highlight=title%3A%28Darth+Maul+vs+Plo+Koon%29+forumid%3A86
http://www.killermovies.com/forums/showthread.php?s=&threadid=430487&highlight=title%3A%28Darth+Maul+vs+Plo+Koon%29+forumid%3A86
But alot of people will agree that Darth Maul wins.
All out, Maul takes this without much difficulty. While Plo Koon probably is a better Force-user, Maul would be just too much. His saber skills are superior to Koon's, and he lacks the explosiveness and agility Maul has.
I would indeed like to see how Koon would fare against Jinn and Kenobi as Maul did in TPM.
Plo Koon's got a nice range of force abilities, and has displayed the ability to telepathically communicate with other Jedi from lightyears away. He's also stated to be able to move objects with the force without even needing to look at them, and his TK is sharp enough to manipulate dust particles. He's displayed more than Maul has, as far as force prowess goes. Saber battle would probably go to Maul though, but not by much by my estimations.