Aeroturbopower has two blog postings which do some interesting analysis on the cost debate between Airbus and Boeing and between Airbus and Bombardier. Post 1 and Post 2 have some detailed analysis that gives an independent look at "who's on first."
Thanks for giving the hint to my blog.
Part III is just finished:
http://aeroturbopower.blogspot.com/2011/04/coc-and-doc-part-iii.html