He DID kill Qui-gon Jinn, while Obi-Wan was helping- even if he fought to a stalemate the second time, Qui-Gon had a spaceship that time. So I draw the conclusion he's pretty powerful. But yes, we all think he's the swordsman type. Why else would he be showing off with that double-sided saber? And we never actually see him explicitly use any Force Powers.
"The beauty and genius of a work of film
may be reconceived, though its first material expression be destroyed; a vanished fiction
may yet again inspire the screenplay-writer
; but when the last individual of a race of living directors, of artists,
breathes no more, another heaven and another earth must pass before such a one can be again." -William Beebe, modified in memorial of the twentieth century
Su'cuy, vod, kar'laylirdarasuum me'suum!
Star Wars: The Plastic Director's Cut!