There is a video on YOUTUBE which was made by a Pakistani engg I think his Avatar says Fighting Falocon16 , he has compared F-16 turn and the JF-17 just look at the video carefully and you will notice that how smooth the JF-17 turns against F-16, Plus if you see the 23rd march video you will see that the Aileron Roll done by the F-16 is by pulling the F-16 nose up and than doing it which doesn't look neat some times, If you see the JF-17 doing it, It does a 360 turn around its Axis without the fighter pitching up or down which shows its stability. Same with the Immelmann turn JF-17 does it better than any other bird except the F-18.