The results are not surprising: OOo users prefer the ODF format and tend to use it for their own documents or within their own companies. They’ll switch to PDF for sharing with outside contacts, and will also use DOC in situations where it is required. Many also use RTF or plain text where possible.
Coupled with new requirements that many governments must store their data in open standard formats (almost always, and exclusively, ODF), Quickoffice is clearly backing the wrong format here. Hopefully for them, they will be able to change course quickly enough to avoid disaster.