Today I did a test with all the Yak's and La's. Put them in the drone circle then behind them at 200 with the C202 and only the 12.5 on the hood. On average all the Yaks except for the Yak3 resisted 2-3 trigger taps into the 6 of the fuselage then exploded. The Yak3 averaged 3-4 which I suspect the lower end number I was shooting into the cockpit side becasue the Yak3 is such a tiny target and it was easy to float slightly inside of the drone circle path trying to stay in path with a larger plane. I thought it was about the size of the Yak7 which it is not very hardy in this test. The La's lasted up to 3 but, surprisingly had many 2's and rounds like with the none Yak3 part of the family would catch in the wings frequently. No Teflon coating on all of those I guess. The Yak3 was hard to hit in the wings with a lot of misses sliding past like the wings were painted with Teflon.
Then I upped the anti with a G2 to use a 20mm and a button mapped for only the 20mm. The none Yak3 part of the family and La's would take 2-3 and explode and no Teflon coating issues. The Yak3 was all over the place, sometimes 2 would do it up to one test I caused all of the fuel tanks to leak, set it on fire, cut the tail assembly to pieces, then it exploded from about the 6th 20mm to hit it. A number just slipped past the wings and the fuselage like it was coated with that Copper Chef ceramic\metal coating.
Both the Yak7b and Yak3 have K105 engine so their fuselage general cross section is not too different. The Yak7 has a 32ft wingspan while the Yak3 has a 30ft wingspan. Even the La5\7 both have a 32ft wingspan. But, in our game only the Yak3 based on flying against it and the input now from many veteran players has a Teflon coating unless you can aim like Carlos Hathcock. And the few times I've flown it, conga lines firing on my six had to have been the worst shooters in the game or, it is a magic plane for newbies to survive in and we all should just fly the Yak3 from now on.
Based on maybe the 30ft wingspan and 27ft fuselage of the Yak3 is deciding it's slipperiness, then the Yak9u should be much harder to shoot down then the La family since it has a 31ft wingspan and it's fuselage is only 1ft longer than the Yak3's. But then it does take some skill to land kills with the Yak-9u.