Interesting.
Could you explain how points work in the fighter category? I understand landing gives you more. But when I kill someone with a 30mm, I only get about (maybe) 75 to 100 points per kill if I land them, where as I may get more with the 50s.. I have never understood how some players get over 10,000 points for 16 sorties flown and 2 deaths, when I can hardly get 700 for a 5-6 kill sortie?? 
Fighter Kill Points in score are mostly damage points as well. With 50 cals you might do much more damage all over the enemy plane until a single component reached its individual max damage and breaks. While a single 30mm hit might very well do catastrophic damage to the same component.
But the main difference in average score points per kill (& assist!) doesn't come from the weapons, it comes from the target. Bombers require much more damage than fighters to go down, thus giving much more 'Kill Points' per victim.
When you look at my stats, you will see that I'm killing mostly bombers. That's why I have 248 points per kill&assist, while you (killing mostly enemy fighters) have 'only' 71.
(For the record, that's also the main reason why my hit % is that much higher - I don't really shoot that much better, my targets are just larger and generally don't maneuver)