Word on Windows and Word on Mac is not equal. The Navigation Pane doesn't let you move headings.

Why isn't Word the same on Windows and Mac? Apple prides itself on being the best, but when it comes to Word that's not true. It would be very helpful for me as a writer to have a fully functioning Navigation Pane. Using the Outline to do what I need is not very easy. So here are 2 questions: 1 Will Apple update it's version of Word? I'm even considering partitioning my Mac to add Windows if I can get the Windows version working on that. 2 Does anyone know if that will work?