One of the nice things in Windows 8.1 is that when one copies files in Windows Explorer, the file manager drops duplicates to the end of the copy queue rather than querying the user immediately with a prompt. In every Linux file manager I've ever used, the file manager prompts the user the moment it encounters a duplicate. What this means is that if you go away from your computer for five hours, then return, you may discover that the copy has not completed due to one duplicate file, and whether you choose to overwrite or skip that file, the copying may have another five hours left to go.
This is another of the reasons I upgraded from Linux to Windows 8.1 on my workhorse computers. I don't need to be waiting around for files to copy.