there are the infrequent "what if" scenarios, but they're more the exception than any regular shwoing.
the most fun one i saw was last 45/46 when russkies and yanks/brits were fighting over Japan (pangea map) - it used the "perk" planes spit14, temp, f4u-4, me262, la7, ponys and made for some good action that allowed the people who showed up to see how the perk planes can handle themselves in a more aggressive environment.
temp - rules all, even in tnb vs la7.
f4u-4 - does sokay.
spit14 - shown to be the weakest of the perkies (other than the ta152 maybe)
me262 - does ok if flown borin... err properly.. can hold it's own in some tnb situations.