Vice,
As you commented, I have tested with high sensitivity and 0 deadzone and rolling goes alright with keyboard, E,Q keys.
Problem is joystick is too responsive then and when I set it to sensitivity low (which is my ideal setup in this game) then rolling with keyboard is back to ultra slow compared to joystick responsiveness.
So yes, it is as you described too.
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Edit: Did another change, it is not about sensitivity it is all about deadzone... leaving sensitivity in low and setting deadzone to 0 instead of 1 (my usual setup) makes rolling with keys work as intended!
So I guess the corrections you mentioned you were including in next update will definetly fix this with all setups.
[Edited on 1-27-2012 by ezra-s]