They are two separate torrents -- the Orbiter2016.zip torrent is the official one. Where did you get the European torrent? Is one of the mirrors serving it up? If so, that's a bug. The filename in the 'Orbiter 2016 Core_ ZIP Package' torrent is wrong, and it is not one of the official torrents.
EDIT:
I just checked, and the wrong torrent files for the Orbiter 2016 MSI and ZIP are indeed on the European mirror. As a heads-up to all, please use the torrent download links on one of the other mirrors until we can fix the European mirror. The torrent files themselves are small, and downloading the torrent file from a remote mirror will not affect your download speed for the actual Orbiter 2016 core files.
This issue has now been resolved. It's worth grabbing the newer torrent file even if you've already downloaded using the one previously available from my mirror (orbiter-radio.co.uk), because the two torrents have different infohashes, meaning that if you're seeding the older one, downloaders of the new one can't download from you.
You can verify you're seeding / downloading the right torrents by checking those hashes: The values are:
Orbiter2016.zip.torrent: 920158d61587ee0049f3369076fd1dae60472d9b
Orbiter2016.exe.torrent: 19f5cb4b507725b31d1fc68e6811f6c498adbfeb
The
incorrect torrents have the following hashes:
Zip package: b1e8090ab5f274a05aac87d8b544c485b1e3ba68
MSI package: bcc10977c514eb3b5a0e7870e13fcf23b32ec11f
If you've got those hashes, then what you can do is download the newer torrent, and point it at the same download path, where you've pulled the Orbiter files to - this should cause the torrent to jump straight to "seeding", if you've already pulled the whole package, so you won't need to re-download the files.