The %ages for English language are all over the place in terms of errors, depending on which source is taken and whether the same words are counted on multiple

The %ages for English language are all over the place in terms of errors, depending on which source is taken and whether the same words are counted on multiple occurrences.  (see comments http://paul.kedrosky.com/archives/2010/06/the_web_is_brou.html#IDComment82583681 http://paul.kedrosky.com/archives/2010/06/the_web_is_brou.ht...) It's a cute post, but I'm not drawing many conclusions from it.