I'd also say Rubens is a FAR better no.2 than Button, why, because he's proved it, for a decade. Last year, and previously behind Michael he'll happily cruise around the track blocking off anyone, staying in a safe second, then he'll put in a 5 lap stint where he burns around the track making Button, even Michael at times look slow. Its just a little "I can drive faster, I choose not to" message. The same way Vettel even cruising into second will most of the time put in the fastest lap just to show even cruising at no.2, he's really faster or at least as fast as Webber..