Think of the La7 as a P-51, with short legs, terrible gun range, little ammo, bad views, no drop tanks, no maneuver flaps, with a nasty stall that performs worse at medium/high altitude.
Oh, almost forgot, it's 4 mph faster on the deck than a P51... like that matters. If the La7 is catching a P51 on the deck it's because he had alt on you to start with or you got too slow.
-Soda
The Assassins