It's completely irrelevant. Nobody uses OS X Server in a corporate environment, no matter what the product might be capable of. And that product is largely based upon Open Source software that you usually run on Linux - completely free.
The reality of the server world is that it is dominated by Windows Server and Linux. You won't find OS X here. Microsoft offers the best BackOffice solutions and Linux is the best choice for web servers and appliances. And both Windows and Linux have infinitely more third party support than OS X.
You cannot compare Windows Home Server with OS X Server. It's like comparing a rowing boat with an aircraft carrier. If you want to compare the two, compare in the same league. But the problem here is that Apple does not offer anything in the lower end where Windows Home Server is located. OS X Server compares more with something like Windows Small Business Server or a bundle of Windows Server and several other of Microsoft's BackOffice products - and those products are targeted at data centers, not living rooms.
But the way that you pose your question makes it obvious that you wanted to hear this: "OS X Server is easy to use and great for media and consumes. Windows Home Server is complicated to use and business based." Right?