Is Windows Phone third place?

Few days ago, I read "Windows Phone:  Surprisingly Easy to Develop For" written by Dino Esposito on April 02, 2012 on Dr. Dobb's

From a consumer's viewpoint, Windows Phone is firmly the third OS by market share at present, following Android and iOS. Some analysts reckon that Windows Phone may be second only to Android by 2015 in a world with only four major mobile platforms left: Android, Windows Phone, iOS, and BlackBerry.

It's not true.

According to comScore report on May 1st, 2012

More than 106 million people in the U.S. owned smartphones during the three months ending in March, up 9 percent versus December. Google Android ranked as the top smartphone platform with 51 percent market share (up 3.7 percentage points). Apple’s share of the smartphone market increased 1.1 percentage points to 30.7 percent. RIM ranked third with 12.3 percent share, followed by Microsoft (3.9 percent) and Symbian (1.4 percent).

Nielsen reported on May 7, 2012

1. Android OS 48.5%
2. iOS 32.0%
3. RIM Blackberry 11.6%
4. Windows Mobile 4.1%
5. Windows Phone 1.7%
6. Other 2.1%

But Microsoft tried to get into the third place in next couple years according to Steve Ballmer, Microsoft CEO:

"I think with a little bit more effort, a little bit more energy, the level of enthusiasm from the customer base is high enough we've just got to kick this thing to the next level. And I think we're in absolute good shape in order to be a very strong third ecosystem in the smart phone world.

(Source:  http://www.theregister.co.uk/2011/09/15/windows_phone_disappoints/)