Holy tinfoil batman, the torrent is most likely only there as a sometimes-slow-but-reliable backup in case the regular servers shit themselves, which usually happens on a new major release when everyone and his grandma downloads the new version at the same time.
Personally I avoid torrents whenever possible, simply because they often take quite a while to get going and even then the acquired speed is often less than stellar. They also don't tend to last very long and once the seeders are gone you're SOL, but for release day they can be invaluable.