The Spit 14 would see some use if it were unperked. Probably the F4U4 would too. The Ta152 wouldn't, it is completely worthless perked, and it would be completely worthless unperked.
I'd imagine the Spit 14 would end up around where the Ki-84 will end up, probably right around the Typhoon level of use. Our MA is one of extremes, the only planes that will see "over usage" are the ones that are the "best" at something. The Spit 9 is the best all around fighter (speaks wonders for German engineering that a 1942 Spitfire will kick the everloving **** out of a 1945 Ta152 100% of the time), the La7 is the best runner, the Niki is for people that would fly the Spit 9 but want more ammo, the Spit 5 for people that would fly the Spit 9 but want to be able to out turn the Spit 9.
The Spit 14 doesn't really have a niche in that kind of environment. A spit 9 would kick the **** out of a spit 14 unless the spit 14 just bore n zooms (and even then I suspect the Spit 9 would equalize energy states eventually and win, although the Spit 14 has a much better chance than the 109G-10 does because of the Hizookas). An La-7 can bore n zoom a Spit 14 with impunity, and even fight for a while until it becomes apparent that the Spit 14 pilot is better than they are, at which point they just level out and haul bellybutton while screaming for help. Actually, a Spit 14 isn't going to survive an encounter with an La-7 in the MA.. if it looks like the Spit 14 is getting the upper hand, the La7 runs, then turns around and resumes chasing the spit 14 once the spit 14 turns around. Eventually, the friends that the la7 has been calling the whole time will arrive, and the Spit 14 will die.
The F4U4 would probably see more use than the Spit 14, because it is almost as fast as the La7, so it can get away with a head start.
The Ta152, well, most everyone knows how worthless that plane is, I doubt it would break 500 kills a month even if it were unperked.