I mean given that there's no such thing as a millibyte it's pretty improbable it would be industry standard anything. A byte can be subdivided into 8 bits but that's it, you're then as low as you can get, you've hit the quantum level for data.
Downloaded the patch just fine but slowly ... 3Gigs
After that i have ??? another patch ? or the whole game downloading 30Gigs.
Was fast when finished these 30Gigs ...
It start with another 5Gigs ...
Launcher display only 60% done WTF ?!!??!