Gotta say, I feel the same... Your 5D II pics do look a little better...
I upgraded from a T2i to the 5D III, and thought my 5D III jpg's looked soft.
My raws, once 'finessed' and then converted to jpg look gorgeous though... I wonder if there's some simple setting we're missing...
Hey Luke, thanks for your response. I'm glad to hear I'm not the only one who thinks the 5D2 results look better! I don't want to sound like a lunatic, as if I'm pixel-peeping needlessly and imagining issues that aren't there...but at the same time, if I drop $3,500 on a camera, I want to make sure it gives the results I paid for :-)
I'm interested to hear you thought your JPGs looked soft, too - if you think that coming from a crop-sensor body like the T2i (a great camera, I got many awesome shots from mine up until I upgraded to the 5DMk2), then it makes me feel a little better that I'm not the only one noticing it (even though I upgraded from a full-frame). While I'd prefer not to have 'mushy' JPGs, it's much more reassuring to hear it's a universal thing and not an issue with mine in particular.
And yes, I'd love it if it's just a setting we're missing that we can fix. While I admit that I don't do 100% cropping regularly, I do like to have the option to crop when necessary, and it is a little disappointing to see that crops on the 5D3 don't seem to have as much detail as those on my 5D2. Don't get me wrong, I love my 5D3's high ISO performance, autofocus, etc, but it seems annoying that to have more detail in my shots I have to turn down the noise-reduction - NR was part of why I was enamored with the 5D3 to begin with!