You will find distros like RedHat Enterprise or SLES9 used by a lot of companies that require support. I work for a bank using SLES9 (not my favorite). They wouldn't consider any distro not backed up by a company with a sizeable support staff. Plus there's the issue of blessing or certification by 3rd party vendors. Oracle doesn't much care if you have a problem running 9i on Mandrake or Slackware. So sales is somewhat relevent within that context. I would find it more useful to see it compared to other Unix flavors as well. Choosing linux over AIX is a different decision than choosing linux over windows.
You will find distros like RedHat Enterprise or SLES9 used by a lot of companies that require support. I work for a bank using SLES9 (not my favorite). They wouldn't consider any distro not backed up by a company with a sizeable support staff. Plus there's the issue of blessing or certification by 3rd party vendors. Oracle doesn't much care if you have a problem running 9i on Mandrake or Slackware.
So sales is somewhat relevent within that context. I would find it more useful to see it compared to other Unix flavors as well. Choosing linux over AIX is a different decision than choosing linux over windows.