Been playing with my spreadsheet some more:
Hamilton's sum best qualifying is 5.758 seconds faster than Alonso (or 0.960 average per qualifying session).
Hamilton's sum fastest laps are 0.444 seconds faster than Alonso (or 0.089 average per race).
Button's sum best qualifying is 5.064 seconds faster than Massa (or 0.844 average per qualifying session).
Button's sum fastest laps are 3.423 seconds faster than Massa (or 0.685 average per race).
Crazy that Hamilton's qualifying average is nearly a second better than Alonso but his race pace is less than a tenth of a second!
If you needed proof that Button is doing better than Massa (apart from the WDC points), not only is he nearly a second on average faster in quail, he's well over half a second faster on race day.
I've got too much time on my hands.