I will be wrong but, apart from changelog files, Ubuntu and Debian packages are the same to me. See attached diff file, obtained unpacking source packages.
** Attachment added: "versions.diff" http://librarian.launchpad.net/6579634/versions.diff -- Please sync unrar-nonfree 3.7.3-1 from Debian unstable https://launchpad.net/bugs/88481 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
