olg you are making my head hurt a little.
do you know why we don't all listen to DVD audio? No one can hear the difference, and the few who can, don't care. You can't see the differences in resolution that have been measured here. I simply don't believe you can see the difference without zooming in to 100% +... where every image I've ever seen (including medium format) suck. The only reason you are even aware of this difference is because of some computer testing. I have my doubts that people would prefer the 50D in an ABX double-blind test, even if it was specifically about sharpness.
Furthermore the resolution of the in-camera JPEGs are a factor of sharpening, and we have no idea if bumping the sharpness would help his figures. Furthermore, anyone who shoots in-camera JPEG can't be THAT picky about IQ now can they? What would you say to a slr owner who only uses the camera in green mode and complains that the exposure is not always ideal? If you want optimal results you switch it into manual, baby. Or did you not learn how to drive stick?
I just playing with you, but please stop looking at numbers and use your eyes. That is what you are supposed to do with photographs... look at them. I cannot believe how much negativity is strewn around based on numbers... no one ever posts a picture and says "look how crappy my camera is!" The only bad photos I've seen were the result of a user error.
I submit, good sir, that we have reached a point of severely diminished returns, and that at this stage in the game, sharpness is GROSSLY over-rated. You can get very fine sharpness from a K10d, yes, because we have had high quality sensors for a while now. I'm not sure if you noticed, but SLR design is much more than resolution. I'm pretty sure we established that many years ago (before everyone started worrying about "ISO"
).