New sounds -does this mean realistic

[Trumper]

Originally Posted by ElAurens

It's easier for Jafa, as he is not concerned about violating copyrights to rip sounds. A real publisher cannot do that.

I don't have ROF but apparently that sound is terrific,hold on i'll look at a link.Sounds excellent to me,so how did they do that without copywrite?
If it is artificially created then why can't it be done on WW11 engines?

http://www.youtube.com/watch?v=ywug1...eature=related