One thing I dislike about the presentation is it does not give credit where credit is due. BitMover wrote BitKeeper (I use it atm at work) which was the predecessor of mercurial and git. Naturally there were issues with being proprietary till it pissed off the right people causing them to create a new VCS based on BK. BitKeeper is... pretty damn slow compared to Git. But it was the innovation.

Also if he mentioned clearcase's performance it would be obvious that Clearcase is a hut made out of good intentions (we didnt even use sticks at that point).