Some interesting considerations have been made about who flies the P51. Lots of newbs, and some really good pilots, too. That explains why I've been running into P51s that try to stall fight me after blowing all their e, and others who blow off my wing on their first guns pass.
There seems to be little middle ground.
La-7's aren't so troublesome because I do my best to fly above 10k ft. If you're frustrated over the La-7, it's time for an altitude adjustment (like my pun?
). Every time I've flown an La-7 I made it a point to climb to no more than 6-7k ft, and then rocket into a low altitude furball at 400mph.