There are already compatibility issues between Office for Windows and Mac. I can only imagine the nightmare of compatibility issues we will see on Office for iPad.
I have been using Keynote on my Mac and iPad to create lecture presentations. Works great even when I do presentations on the classrooms PC using Chrome web browser.
Thank you MS but I am sticking with iWork.
PS. Next time MS don't wait years. You have wasted valuable time and people already moved on.