We noticed that the camera's field of view looks smaller (zoomed in) with Vuforia compared to the normal camera mode with the iPad Pro.
Note, we are aware of the resolved issue recommending MODE_OPTIMIZE_SPEED for better results. Unfortunately this did not solve the problem for iPad Pro, as the attached screenshots show.
Tested with Vuforia 6-0-117. Other camera modes were also tested without success. On iPad 4 everything worked fine.
We're going to test this also for the iPad Air 2 in the next few weeks.
Any further information or help is appreciated.