Shane Perkins, and Aussie track rider who is probably the strongest cyclist in the world in terms of pure brute strength, has a maximum output of 2500 watts (my guess is that is a ten second effort, they don't give it, but his 60 second effort is certainly higher than 1100 watts).
The more reliable measure is w/kg. Pros tend to range anywhere from high 4s (low-level sprinters or rouleurs) to mid 6s (world class TT'ers or climbers), with most being somewhere in the 5s. If la gazzetta's numbers are right, and if we believe Tony Martin's posted weight of 75kg, his 480 watts puts him at 6.4 w/kg.
Don't get me wrong, I'm nitpicking here, I was just noting those numbers feel slightly low.
On individual rides (e.g. http://app.strava.com/activities/66583736 ) there's a chart below the map which you can switch to show "Performance", check the "Power" checkbox and you'll see his watt output. Looks like today he cracked 1kw momentarily about ten times, and for an hour starting around ~1h30 in he never went below 200w.