Josh, I have access to logs from a major e-commerce site, not top 10, but somewhere in the top 50, if I recall correctly. Two issues you may encounter in your quest: 1) We restrict our site to 4+ browsers and even some of those don't get a good experience. This will skew the results. 2) There is no business case to release these stats, and the basic corporate mentality is to not release data unless there is a very good reason. You never know what may be valuable to your competition.