Hmm...I just realized that this is the same footage as a video Deathcow posted a while ago, but mine has a different soundtrack (his had 'Black Hole Sun' by Soundgarden). Is that reason enough I should discard this? IMO, I like this soundtrack slightly better...

It's questionable...I have no problem with it

http://www.videosift.com/video/The-journey-of-the-Mars-Rovers

I think the different music adds a significant difference in these instances, which means not dupe.
Still, it's a borderline case. The argument for dupe could be: the different soundtrack is not enough, and the argument against it is that it is enough. If the community agrees on the first, then there is a counter in the fact the some people think that the music in this one is superior to the other, which would mean that for those people the sift would keep the "bad" version and lose the "good" version. I think we should just keep both.

*length=07:55

The duration of this video has been updated from unknown to 7:55 - length declared by cricket.