Well, according to "the Windows Download link":http://userbase.kde.org/KOffice/Download#Windows and "the MacOS X Download link":http://userbase.kde.org/KOffice/Download#Mac_OS_X , neither platform is robustly supported at this time. I did find KOffice is listed in "Fink":http://pdb.finkproject.org/pdb/package.php/koffice-base , but still depends on X11 while OpenOffice runs native in MacOS X.
Sorry I do not agree with you, but we each have our own opinion.