Mailing the story:
No, really! Ubuntu is not Linux! Try it on for size!
For reason/reasons unknown, ex-Windows users leaving Windows and seeking a free alternative somehow do not seem to be flocking to ReactOS. Instead, the Windows users are coming to Linux in general, but we hear a lot of complaints from the ex-Windows users that Linux is difficult for them to get used to. They want a free system that is Windows-like, and here they have a free system which is Unix-like.