Some guy puts some goofy restrictions on the fight then makes a false statement that the Yak will always win no matter who is flying it and some how it becomes a fact?
Let's review this thread and see if we can follow the progression....
One guy wrote: "The mustang can go toe to toe with a yak in a stall fight no problem."
I replied: "Ah, no. The Yak has a much tighter turn radius. I'd classify it mid way between a Spit 8 and the P-51D. the P-51D pilot has to conserve his E and avoid using excessive flaps or it becomes slow speed fight where the Yak is superior."
Another gent chimes in: "On paper, but not in the game, and it depends on who is flying. I share the view of BigR, and have done it many times. The 51 is very versatile and can stall fight a Yak quite well, even at slow speeds."
Relic agrees: "I concur."
I offer a challenge: "Okay, let's settle this... Cage match. Large field in TA. Can't fly beyond the outer road boundary of the field. Take off on opposite headings. Reverse at other end for merge. Guaranteed stall fight. You, or anyone else feeling froggy, takes a P-51D, I'll take a Yak-9U. 60 seconds after the merge, you'll be flying a sieve. Any takers?"
Relic takes the challenge: "I'm game."
So, we fight the cage match and the Yak utterly dominates the P-51...
There were no other takers... Nonetheless, the fact remains that the Yak will abuse the P-51D in a stall fight. Given equal pilots, the P-51 will not win...
Now, the MA environment is completely different, but we were not discussing the MA per se, but stall fighting.