US props aren’t overtiered, they just don’t fit the meta well. The US designed planes for real life. The realities:
- Fighters were almost always in the air and at altitude before engaging enemies. Airfield starts in RB are extremely unrealistic.
- Fighters would almost always have advance information of enemy location and altitude whether from RADAR, coast watchers, or reports from allied bombers.
- If 1+2 weren’t true, no fighter could be effective.
When you read about WWII fighters, especially US, they are always at a pre-selected altitude searching for enemies. The game meta where both sides start on the ground and race to climb above one another was something that almost never happened.
If you played during the brief time where Gaijin gave P-47s an interceptor start, you remember how gloriously overpowered they were. They were designed to be at altitude and speed before engaging, so when the game allowed them to do that they were suddenly amazing.
But because of the unrealistic ground start US planes generally don’t perform near their potential. It’s especially a problem because they can’t climb to compete with their contemporaries, but when they have their BR reduced to fight earlier props, earlier props are all lighter and more agile.
P-51 is far from the worst US plane though. If you can just survive the initial merge when all your enemies are above you, it’s pretty good.