200 meters race is run at faster pace than 100 meters

Thanks to New york times and their beautiful charts I discovered today that the 200 meters track and field race is actually run at a faster pace than the 100 meters. The current world record for 100 meters is 9.69 sec. The world record for 200 meters is 19.32. Probably the momentum of crossing the 100 meter mark in the 200 meters is just enough to make this happen. No wonder though that this year (2008) the 100 meters world record was shattered by Usain Bolt who is actually a 200 meters racer.
I wonder if the same would be true for swimming. For a fair comparison though the swimming track would have to be really long. For example we could compare 50 meters pace versus 100 meters pace in swimming if one lap in swimming was actually 100 meters. So we basically discount the part where the swimmers have to decelerate and bounce of the walls at the 50 meter mark.
Or make the 200 meters track and field such that the runner runs 100 meters till a wall, touches the wall and runs back :)