Jedi Academy is a very strong game, but you're better off going with Outcast.
First off, Jedi Academy is much more customizable then Outcast. You can make your own character, and you can customize your lightsaber, a feature not available in Jedi Outcast. In spite of all this, the game actually looks worse then Jedi Outcast. Jedi Outcast had better shading, sharper enviroments, and smoother models. It leaves you with a feeling of, did they really take a lot of time in modeling this game? Apparently, Outcast is the stronger in that category.
In terms of controls, the does well, there is no bad controls since you can customize them.
In the sound category, the music in this game is good, featuring Star Wars like tracks and everything else you can come to expect.
Now, the definite worst part of this game is the level design. Unlike the previous two games, in this game, you are to select missions from a list to complete. All these missions are pathetically easy, and I faced absolutely no challenge in this game whatsoever. I was frustrated many a time in JKI and JKII, but in JKIII i simply laughed as I massacred many a Jawa at how easy it was to complete each level. The hardest part about this game was just to not make stupid mistakes like falling from too high up.
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How scary.
In the end, Jedi Academy is a great game, a Star Wars must-have, and I recommend it, unless you've never played Outcast.