That is very true, but those files weren't THAT small when you clicked on them, and other examples on other sites allowed a full downloads ... and those also displayed the same look and feel even when much larger.Bizarre that folk here are making judgements based on small web jpegs.
In a way it is sort of relative ... I think we get pretty good at evaluating like this on a level playing field because we see files from all cameras in that way. Actual sharpness probably can't be evaluated very well, but in my experience, the look and feel of files tends not to change all that much. I found that out with the D3X ... a camera I loved using but hated the files.
But you are dead on that what really counts is seeing the print output.
-Marc