Watts = power.

400W is a lot.

World class sprinters can generate 1600W for a brief period of time.

Floyd Landis, when he ripped the legs off the competition during the mountain stage of his ill-fated TdF generated something like 750W over a sustained period of time. I don't care if it was drug-induced or not. That's a humongous effort.

I wonder if the computer-derived values are accurate. Serious folk use a PowerTap or somesuch.

My computer says I generated 250W on one of my climbs today. I thought my eyes were going to start bleeding at the time.

But I'm not very good.