Posting from Las Vegas: Microsoft is promoting Windows Phone here at the Consumer Electronics Show with a publicity stunt that mixes competition with good-natured humiliation. And so far it’s working out pretty well for the company.

At the company’s CES booth, Ben Rudolph of the Windows Phone team is challenging users of other smartphones to duels in which they race him to complete everyday tasks such as checking the weather, posting to Facebook and Twitter, and snapping/sharing a photo. Anyone who beats him gets 100 bucks.

Anyone who loses has to admit that their phone was “smoked by Windows Phone.” (Rudolph also offers them a Windows Phone as a consolation, if they want one.)

Summing up the Day 1 results in a blog post, he reports 21 wins, two losses, and a tie — underscoring the company’s point that Windows Phone is faster at many everyday tasks.  You can see the highlights in the Microsoft video above and read more background in Rudolph’s introductory post.

Follow-up: Windows Phone’s final tally: 30 wins, 3 losses

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