I am in a P47M say at 5000 feet above the ground say at 250 MPH climbing up or just picking up speed heading for a distant enemy base or a dogfight. I see a 109, 190 or well, really, any fighter say 3000 feet over my plane. They dive in and it seems my first move gets me shoot every time.
Found the problem. P-47's, while they certianly CAN play at low alt, aren't the best there. Try and climb out over your base if nessecary, or climbing higher before ingressing.
As to the 109, it really depends on what possition hes attacking from, so I can't give any particular maneuvers without more information. But if you don't mind blowing alt, just dive hard and fast, and he'll probably break off. Unless it was a lone con, I never dove to chase an enemy in the 109. If he does dive, you'll have two things going for you: 1) he will have had to limit his dive speed, or else lawn-dart. That means your E-levels should be close to equal when you hit the deck, or just stop diving. 2) He'll be suffering from heavy control surfaces, and so you can gain an early advantage before he slows down and starts to maneuver more effectively.
However, this also carries its own set of risks. If you don't gain the advantage in the initial manevuers when he's still heavy at the controlls, or gain enough seperation to escape, then all you've done is blow altitude, so you can't try to dive again. The 109 soundly out-climbs and out-accelerates the P-47 at most altitudes, so the E states won't stay equal without you putting some preasure on him.
As for the 190, I didn't fly it as much as I flew the 109, but I think you're kind of out of luck; they handle speed fine, and they can reorient their lift vector faster than anything else in the game, so he'll be able to follow most maneuvers just fine.