Looks like they love Canon!
http://www.petapixel.com/2012/12/02/the-most-popular-cameras-and-settings-for-reuters-best-photos-of-the-year-2012/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+PetaPixel+%28PetaPixel%29
(Images can be embedded but the 86 just finished downloading and I'm off to watch it)