-Take a joystick and AM-9 (as is more nimble and thus more pronounced)
-Gain altitude as to not crash.
-Start doing a barrel roll with your joystick. While doing a roll, push a button on the keyboard responsible for the banking and you will see the difference straight away.
Another way.
While in the air, try quickly rolling from side to side with keyboard and then Joystick. Difference is crazy.