You are most assuredly onto something. The test you just conducted authenticates the CBS memo as a microsoft word document using the old pantograph techniques of the pre-typewriter era. The probability of a match by coincidence is so remote as to make it statistically negligable.
This seems to be the biggest development on the forgery story yet as word is getting around. See http://www.chronicallybiased.com/index.php?itemid=1486