Let's understand something up front. In the real world, the La-7 was not quite so formidable. Indeed, the Luftwaffe was far more concerned with the Yak-3.
In Korea, Lavochkins (and Yaks for that matter) were slaughtered by P-51s and F4Us. Moreover, these were the later models of the Lavochkins, the La-9 and La-11.
As relates to this game, the La-7 is no better than the guy flying it. To my mind, anyone deliberately challenging a Typhoon to an HO is an idiot anyway, and this is common behavior among the La-7 crowd.
As a fighter the La-7 is, well, just ok. It's fast and allows one to escape situations that would normally end in a shootdown. However, if I want high performance, I'll take the F4U-4. If they ever correct the under-modeled climb rate and drop the "4" from the icon, it'll actually be worth the perks.
My regards,
Widewing