that sort of graininess doesnt exist when I print out to my usual size for clients, which is 45x30 inch - quite a large size. That 'graininess' shown above seems to come from tiny crops which are more than 100% or so - other cameras might seem smoother - but it also means they dont retain details like the 5D2 can or did above.
this is just pixel-peeping to me, printing results will always be better than on screen.