The single most important stat for a fighter is its thrust to weight ratio. Now shooting down WW2 bombers was not as simple as run in and shoot. They tried that with the Me-262 and other jet/rocket planes towards the end with mixed results.

If you are planning on avoiding the fighters, you would need at minimum a 100 mph more then the fighters can do, anything less and you will get shot up before you are done, assuming that the enemy is somewhat efficient. This leads to the problem with run and gun. Time, you need time to put rounds on target. Your effective range is around 600 yards (1800 ft or .34 miles) given a speed of 550 mph you cover that distance in 2.2 seconds. This is enough time to get on target and shoot a couple of rounds at most. Assuming you are a good shot and hit 75% of the time you have a you might hit with one round. This is why the Germans mounted the bigger cannons on their planes that one round does more. So you would heave to make multiple runs to get a bomber and you still have to avoid the fighters.

What would make more sense would be to have a fighter to engage the fighters and interceptors to shoot the bombers. This was the inent but life is never as easy as we plan.

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The Muslim Brotherhood “must understand that their work in America is a kind of grand Jihad in eliminating and destroying the Western civilization from within and ‘sabotaging’ its miserable house by their hands..." — Mohamed Akram. http://jihadwatch.org/