I haven't read the article but I think it's important to point out that the comparison is between IE and Chrome not Windows 7 and Chrome. Put another way, if I

I haven't read the article but I think it's important to point out that the comparison is between IE and Chrome not Windows 7 and Chrome. Put another way, if I had an OS specifically built to run a mail application. Then, regardless of hardware, it wouldn't surprise me that my mail application ran faster on that OS then on Windows 7, OS X, etc.