Engines are too strong and reliable.

[sniperton]

Originally Posted by majorfailure

That was IMHO partially offset due to AI able to lean right/left and that way they seem to be able to cover even their sixes

You're probably right, but it happened to me a couple of times that I attacked an AI from a climb, that is, from his absolute dead six fully covered, as I believed, by the bottom of his fuselage, and still he broke away as soon as I arrived in firing distance (<300). He may have seen me curving in, but I seriously doubt that he could see me in the last hundred meters of my approach. Either he's got a monstruous rubber-neck to lean out and look back (as you suggest), or he's so clever as to count till ten after I disappeared from his sight...