For all the talk of a classic season in the making, it's interesting to read that this is Hamilton's equal best ever start - three wins and a second. It is still looking good for a close fight, of course, but I wonder if we'll soon see the cumulative effect of Red Bull and Max being just sliiiightly less brilliant all round than Merc and Lewis, and continuing to make the small mistakes that the latter so rarely make. (You feel that Hamilton's one big mistake of the year was at Imola, when by great good fortune - for him - he still finished second.) They may be very evenly matched, but if Merc just edge it time and time again it could still end up looking like another comfortable double championship come the end of the season.
Then there's the perennial problem of the RB second driver. Perez looks the best bet in a long time, but he's not quite there yet and it's already costing them. Merc have had the perfect combination for years, meaning among other things that they can often try different strategies at the front and provide a buffer to their leading car, which RB rarely have the luxury of doing. Barring some exceptional development, I think the constructors' championship is already as good as over.
Anyway... I can't wait for Monaco!