You may be correct, but Heikki didn't attack in the first few laps. He had KERS, he could have muscled his way through. He was too timid.Did they? No-one knows how Hamilton would have done on the same setup, he could have done great, or he could have been just as bad as Heikki was.
To me, it seemed that McLaren + Heavy fuel + Harder tyres simply don't work (or didn't work in Monza anyway), that's where Heikki lost his places etc, the latter half wasn't bad even if not too great either, and in the end he drove same laps as the lead did.