As we mentioned earlier, Microsoft's Ben Rudolph (known as Ben the PC Guy) is on-site at CES, looking for inferior phone users willing to accept his speed test challenge. The test in question, from what we hear, involves both Ben and a challenger performing a selected common scenario -- like taking a picture and pushing it to Twitter as fast as possible --, network and fat fingers permitting. (They get a warm up session in an attempt to even the playing ground.) Whoever finishes that scenario first takes the bacon.
Judging by the results thus far, Windows Phone is smoking the competition. You can keep an eye on the steady stream of losers by following @BenThePCGuy or watching tweets tagged with #smokedbywindowsphone.
(Edit: Turns out pushing to Twitter is only one of a few scenarios you can pick from. I genericized the post to reflect this.)