Turn the settings on Tube up to 720 then look, it's the exact same thing.
If you can output 1080 do it. No point in not giving the extra option.
If you ripped a Blu-ray 1:1 and then uploaded it to YouTube would it have the same quality? No. It would look similar-ish but never exactly the same.
YouTube compresses quality, and grainy videos get automatically DNR'd.









