Windows is the business standard -- and the release of Snow Leopard won't change that. In enterprises and most businesses, the vast majority of computers run Windows, with only a few exceptions. Many enterprises have standardized not just on Windows but on the entire Microsoft architecture, including Office, SharePoint, Exchange, custom-built applications for Windows and so on.
In addition, Microsoft has a host of IT and management tools for deploying, maintaining and updating Windows hardware and software. Windows 7 adds some new ones, including management tools that use the scripting and automation capabilities of Windows PowerShell 2.0.
Snow Leopard makes a nod toward the enterprise, with built-in support for Microsoft Exchange Server 2007. But that's simply not enough. Snow Leopard is a consumer operating system, and isn't accompanied by the kind of management tools and IT ecosystem that enterprises need in order to manage large deployments.
The Winner: Windows 7. Windows remains the enterprise standard. No change appears imminent.
Snow Leopard is more than just an operating system -- it comes with a full suite of applications, notably iLife with iMovie for making movies, GarageBand for recording and editing music, iWeb for making Web pages and more. There's also the excellent Time Machine backup and restore utility, QuickTime X for capturing movies, and the PDF reader and utility Preview.
By way of contrast, Microsoft has made the decision in Windows 7 to strip out many of the extras in Windows. For example, Windows Movie Maker and Windows Mail -- both very good programs -- shipped with Windows Vista, but will not ship with Windows 7. Windows 7 does include a usable backup program -- finally -- but it's not up to the standards of Time Machine.
The Winner: Snow Leopard. There's no real competition here; it wins hands down.
If you go by the scorecard, we have a tie -- Windows 7 and Snow Leopard each win five categories. Of course, going by a scorecard is too simplistic, because not all of the categories carry equal weight.
So which operating system is better? The near-simultaneous release of Snow Leopard and Windows 7 doesn't change the dynamic that has been in place for many years in the operating system competition between Apple and Microsoft.
Snow Leopard is more beautiful and elegant as well as simpler to use -- although with Windows 7, Microsoft has closed the gap between the operating systems, particularly when it comes to taskbar improvements.
Windows 7, on the other hand, remains the corporate standard, and nothing in Snow Leopard is likely to change that. And it's still a more tweakable operating system (although its critics may say that tweaking is mandatory in order to get it running right).
As for me, I'll continue to use both Windows 7 and Snow Leopard. I can't remember another time in which Apple and Microsoft simultaneously released major upgrades to their operating systems. Both releases are big improvements. It's a golden time for operating system aficionados -- my recommendation is to use both and enjoy them if you can.