He compared more than just images. Although, the post should have been a comparison of MobileMe and GMail.

I do agree with the conclusion:

The media-appropriate approach of Google shows that the interface is not a matter of graphic design, it’s a matter of how it works. With all the glitz Apple brings to the Web in an attempt to win a beauty contest, they lose the true contest: the beauty of usability. But that doesn’t mean you shouldn’t give your Web app a manicure.