Why did this turn into a futile ENY argument? Values above 10 do not matter anyway.
Why worries me about the yak is that it seems to have almost no induced drag. I can hold it at 80 mpg with lots of rudder input, stall buzzer yelling and it still climbs at 3500 fpm. Most planes can barely hold level so far back on the power curve.
One last thing - stop saying that the yak has a short range. True, it is no p51 in that respect, but how long would most planes fly on WEP 100% of the time? Throttle back or reduce throttle and suddenly it flies as long as a typical non-escort fighter.