It is one persons opinion, are you a recognized authority in usability of desktop applications? Can you provide non-biased large scale research studies with clear and concise points of why MS's solution is better?
Here is my counter point. I have been using office suites since 'Display Write 4' for MS-DOS in the 80s. I have taught classes on advanced document production using open source software. I have converted hundreds of users to Linux and the only complaints I get about office suites are why are MS formats so incompatible with everything else.