To sum up data from these charts I posted earlier
Regarding top speed:
At 35,000 ft:
P-51H reached 482.5 mph = 776 km/h
F4U-5 reached 395 knots = 731 km/h
Ta-152H reached 715 km/h
F8F-2 reached 360 knots = 666 km/h
At 25,000 ft:
P-51H reached 487.5 mph = 784 km/h
F4U-5 reached 407 knots = 753 km/h
Ta-152H reached 700 km/h
F8F-2 reached 383 knots = 709 km/h
At 15,000 ft:
P-51H reached 465 mph = 748 km/h
F4U-5 reached 390 knots = 722 km/h
Ta-152H reached 655 km/h
F8F-2 reached 373 knots = 690 km/h
At 5,000 ft:
P-51H reached 445 mph = 716 km/h
F4U-5 reached 364 knots = 674 km/h
Ta-152H reached 607 km/h
F8F-2 reached 353 knots = 653 km/h
so apparently, Ta-152H is nothing specially unless at extremely high altitude, and P-51H is so extremely fast, it even faster than F8F-2 and F4U-5 at low altitude? How come?, did i made some mistake?