The following screenshot shows Axis trucks on turn 1 of a grand campaign. Left side is with patch 1.03.07 (OB 2.0 update). right side is the same thing (start of turn 1 of a grand campaign with 1.02.52 (the last pre-OB 2.0 patch IIRC).

You can see the Axis has 20k fewer trucks with the new patch.
However, the "need" is also smaller by about 15-16k, so at least at first glance you might think that starting with 20k fewer trucks is somehow compensated by the lower need or something.
Here is the same comparison on turn 2 (again, no moving any units or doing anything, just clicking through the turns). I wanted to go through a few turns just to check if it somehow worked itself out quickly from minor differences in when units with particular TOEs like RFSS or something arrive on the map. It does not...
turn 2:

turn 3:

turn 4:

turn 5:

turn 6:

Final total difference on turn 6:
397,104 with new patch
416,364 with old patch
That is a difference of 19,260 trucks
If you do not count the repair pool, it is a difference of 18,971 trucks
Need in units is lower by 7,315 in new patch though