you are only debating the file and the operating system.
If you are talking about a long term archiving, I think the right question would be:
What storage system do you want to use?
A spindle (HDD) which has to turn around and to consume constantly energy?
Or if you put it into a shelf, you almost get a guaranty that after 5-10 years the HDD does not work anymore.
CDs DVDs? which are gone after 4-8 years (you actually can expedite this, by putting them on your rear window shelf of your car. Than they might be gone after an afternoon in the sun)
Tape: The technology they promise us since 20 year that it is going to die, but it seems like it lives for ever.
The new LTFS (Linear Tape File System) makes tape actually a really cool thing.
You can use your tape drive as easy as using a Thumb-Drive with a capacity of a single cartridge of 3.000 Gb (compressed).
To answer your questions:
Tape is fast: 140MB/s (compressed 280MB/s)
Tape is perfect for archiving. Expected live time of a cartridge +30years
Tape is compatible. Same cartridge can be used for Linux, Mac-OS and soon Windows
Tape with LTFS is easy to use.
Here is a link to an wiki article: