[CentOS] Huge OO.org packages installed by default

I was just wondering if anyone here knows why the OO.org packages on RHEL/Centos are so huge. Eg. On Mandriva 2006: 40834529 OpenOffice.org 113064600 OpenOffice.org-libs 20124669 OpenOffice.org-help-en 19976941 OpenOffice.org-l10n-en

= ~185MB

On Centos 4: 683298379 openoffice.org-i18n 124072694 openoffice.org 111894560 openoffice.org-libs

= ~876MB!!

When I say 'installed by default' I mean that I selected the 'Office' package group during the install of both OSes and didn't make any custom package selections. Both OSes have OO.org 1.1 working fine, I'm just wondering why costs me nearly 5 times as much disk space on RHEL/Centos than it does on another distro?