You have to be a lot more patient in the P51 than the Yak3. The fuel limit also means you have to be more aggressive than the P51. This means that the yak would be a better choice for new players, it would also help them learn to aim, than the P51. Most of the time, new players don't fly patiently and end up low and slow on the deck. This is a much better position for Yak than the P51, and thus makes it easier for new players to get away from pickers. That being said the yak gets down low a lot, and that helps it get picked most of the time. That's why turny birds like the like spit and ki84 have a lot more deaths than a 190D. You can guess which is more fun to fight in the MA.