10 Mp vs 6 Mp do you own both cameras?

Hello to all, I would be glad if people that have both cameras for example D40 and D80/200 could post a picture processed the same way and resized to 1280x1024 resolution to show that 10 Mp is the same to 6 Mp, a real comparison.

Will be nice if the picture has shadows to show the electronic noise effect of both sensors...