In Japan a train is considered late if its a minute behind. – the bullet train was on average only 6 seconds late. I think in the US, the train is on-time if its 30+ minutes late. Riding on the train in Japan, I always marvel that there is a PA announcement where the conductor is apologizing for being a few seconds behind.
To test horse-power vs. punctuality and efficiency, the BBC Top Gear car show, in its always unique fashion, tests the Nissan GT-R by racing across Japan vs. the bullet train