The fw 190 ai is hard, probably the hardest ai i've fought against, however it is obviously running on a simplified( and sometimes crazy) fm. That being said if that is the best way to get tough ai then I guess I'm for it. Of course the ideal set up is true fm ( like BOS ) that is hard to beat, though with BOS I've noticed when you get in the saddle so to speak behind a plane they tend to give up(although it is still very good ai). But just watch the outside view of the 190 when it's going up and down,up and down,and up and down, and you can see how railed the flight is.