Chris' version is definitely much better than Civ IV's modified version, but I understand Firaxis wanting to underlay the Civ percussion track to the song. The only problem I have with Chris' version is that the percussion doesn't come through. If you think about it, the original forms of this music wouldn't have had any voice amplification (well, or solo singers...) so the percussion would have been more dominant. Civ IV's version allows the percussion to hit stronger, but it's pretty lousy percussion, so I can't really praise it.
Point: If you are judging the song based on what you hear in Civ IV, you are judging the wrong thing. Go listen to Chris' version.
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