Where are you getting your numbers from? Yes, we know the numbers on BMW USA is wrong but on there the AH3 is a little faster than the manual and .1 slower than the AT. We know so far real world 335i does about 4.7 and only time will tell how much AH3 will do but im predicting 4.5 - 4.7.
These numbers are copied directly from BMWUSA... see link below
Acceleration 0-60 mph – Manual transmission 5.4 sec
Acceleration 0-60 mph – Automatic transmission 5.1 sec
Acceleration 0-60 mph – Automatic transmission 5.2 sec