ProPhotoHome did the “Galbraith” AF Servo test and the 1D Mark III outperformed the D3 by a wide margin.
1D Mark III: 31% Out of focus
D3: 48% Out of focus
The latest firmware for the 1D3 showed a 9% improvement in this test.
This clearly means you can no longer marke good images with the D3, and you never could on the 1D3… until now!
In all seriousness, every user of the 1D Mark III is very positive about the latest firmware for the camera. Hopefully the “AF issue” can be put to rest.