I hope that the creators find this hidden in their forums. I started playing Brink yesterday and when I went to control options I set the sensitivity to it's highest output. After setting it to max I started and completed the game as well as the challenges and I feel as though the sensitivity should be able to be at least double if not 50% higher. The game is really great and I am sure it will be even better once PSN comes back on. If the developers could patch this that would be great. Besides that great work Bethesda!
Brink's max setting for sensitivity is probably the equivalent of CoD's "6". maybe "7". I know a lot of people that operate CoD at "10", and therefore would find Brink's sensitivity frustrating. KZ players probably won't have much issue, though.