In reality, if you have a good Yak Pilot and good 109, 190, 51, 38 pilot most fights end up in a stalemate. Cause generally those planes will B&Z a yak, and the yak will escape and try to manevour onto your six but you will extend away. This could go on forever had we an endless supply of fuel. But as Leonid said be prepared as you have never seen a plane stall turn like a yak, and I dont wanna hear the famous that plane is hacked statement....YAK's SU Air superiority at it's finest...