I imagine the comparison is supposed to be based on adjusted for inflation wages, 1965 to 2007.

This article has similar numbers: http://www.kyklosproductions.com/articles/wages.html

Also includes this quote. "As one source has put it, "in 2000 a CEO earned more in one workday (there are 260 in a year) than what the average worker earned in 52 weeks. In 1965, by contrast, it took a CEO two weeks to earn a worker's annual pay"."