Back in November, I did some 40k speed runs comparing the Ta 152 and P-47N.
At 40,000 feet, the Ta 152 could reach 453 mph. That's mighty fast. However, the P-47N was able to attain 462 mph. The 152 required WEP, but the P-47N was above FTH, so WEP provided no increase in power.
Adding to the difference was the far superior acceleration and climb of the P-47N above 30k. The 152 required a 50 mile run to reach max speed from 400 mph, but the P-47 needed just 30 miles (and was 9 mph faster). Maneuvering was tested subjectively. I found the Jug far more stable and a much better turner, especially as it could utilize flaps very easily and efficiently.
At 450 mph @ 40k, I executed a zoom climb in each. The P-47's greater mass carried it about 1,000 feet higher.
From 43,000 feet, I dived each to its maximum speed. In Mach, the results were:
Ta 152: 0.88 Mach
P-47N: 0.91 Mach
Both recovered without drama using trim tabs.
My regards,
Widewing