I suppose it was slow enough but when you're on the cage you will leave yourself opened to a shot or two. Obviously Browne's knee would be taken to account with the finish though.
Bigfoot's a lot better than people say though. The fact that he has a submission game is ridiculous for a guy of his size, and his grappling is good aswell. Add this to how powerful his punches are, and he makes for a pretty good fighter.