If Lewis had got a clean start I think he would have ran off into the distance (like Button did). You've got to remember that Lewis was on pole and therefore had the advantage at the start. He didn't get a good start and thankfully (from a McLaren fans perspective) we had Jenson there to capitalise.
How could that have happened? He didn't have the pace.
I worded it like that just because of how this race panned out. But the point can be applied either way. IMO McLaren have the strongest driver line-up on the grid that means that if one driver messes up or is caught out by something like a SC (as happened with Lewis today) the other will more than likely be there or there abouts to capitalise and more importantly prevent rival teams and drivers from capitalising as much. Compare that with Ferrari for example who have a very unbalanced driver line-up.
I fully agree about Massa, and I would like to see them put an established quality driver in that seat as soon as possible. But we have another thread for that discussion.