Most ace pilots that flew decent 1944-45 rides, be they German, Soviet, Brit, Japanese all say they liked "plane X" and that it was a match for the enemys.
The differences tend to get way overblown on the BBS "oh ya, it was 8 mph faster and it could so this with the flaps at one notch" blah blah blah.
In any case anecdotal sources can tell you the mindset of the individuals (they were confident, wow, what a surprise), but not much else concrete.
Yeager flew Mustangs, he was an ace, he survived the war. Its no shock he speaks highly of it.