I have maintained that as much as I like Brown at running back, I like him even better at corner. On the first clip, he is playing corner in the slot at the top of the screen. Watch the pure speed that Brown has, as he reels in the Stephenson running back. He is more than just speed though. On the second clip, watch him lower his shoulder, and lower the boom on Stephenson safety Breon Rogers.
#20 Thomas Brown
It's easy to see in this picture why Brown is able to run with such speed and power: