Here you can see some 30+ shows I shot w/ my 7D and then the 4 most recent with the 5DMKIII and see the difference. The only new lens I got with the 5DMKIII was the 16-35, which is obviously great as well (I used the 10-22 on the 7D). Otherwise, all the lenses were pretty much the same.
To me it seems the photog really makes the difference, a preview size I cannot see a difference between your (great!) old and new shots - but I guess the 5d3 just got you more kept shots. Concerning the 16-35: What other lenses do you use for these shots?