The reason they are perked is to stop a few planes dominating the arena (which would be boring). This was the only reason why perking the F4U-1C was considered (as I understand things).
The Ta152 is a scary beast, my first engagement with one was in a Yak9T and I had at least a 5,000 ft altitude advantage (actually I misread the icon and though I was diving on an Ar234, I realised my mistake when the thing came striaght up at me about 350 MPH =), it was fun, but I was completely outclassed.
It'll be interesting to see how the perk system works out, as Pyro said it's early days yet and they INTEND to have to tweak things to make it work the right way.
As it stands if someone trys to fly the Ta152 exclusively and only engages Yaks or other Ta152s (silly I know but, I just want to play with the maths for a minute), he has to shoot down either 125 Yaks or 40 Ta152s, and land them all, before he can afford to be shot down once!
As the perk points that people aquired last tour get used up I think we'll see a lot less of the perked planes with them turning into scary occaisonal encounters.
It'll make life interesting that's for sure =)
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Graywolfe <tim@flibble.org>