I've now had the chance to sample the Matrix theatrical DTS and compare it to the BR audio. To me the two sound very similar with any perceived difference possibly being due to levels as hairy_hen mentioned.
That being said, there's something about knowing I'm listening to the original theatrical audio that gives me a warm fuzzy feeling and an outstanding job has been done syncing it to the BR so this will remain my preferred track for watching the movie. Many thanks Jetrell Fo for making this available. :)