LOL. It has to do with the size of the page (bytes), not the speed of the network.
http://www.alexa.com/data/details/?url=abcnews.com
Speed: Very Slow (84% of sites are faster), Avg Load Time: 3.5 Seconds
http://www.alexa.com/data/details/?url=cnn.com
Speed: Slow (79% of sites are faster), Avg Load Time: 3.0 Seconds