I really dont understand the pictures
The strafe turns pumas into stukas or something?
First 2 pictures is the performance of the strafe whenever you put the aiming bar straight in the middle of the vehicles. If you look closely there are times on which it deals 0 damage to the PUMAs.
The 2nd set of pics shows the damage done when you OVERSHOOT, so you put the aiming bar way forward compared to the position of the vehicle. IN this way, you have (small) changes to actually kill a PUMA or put it below 20% HP most of the time. It's also a guaranteed kill on a vehicle with lower health and armor such as the Stuka.