Mclaren and (particularly) Hamilton have the car now to start every race from pole, if Vettel had just had another mediocre race, I'd say it was doable to catch Alonso, but he may find Vettel taking points off him. I hope Button plays the team card now to help.
I think it ultimately comes down to how quick the Red Bull car is from now on.
I'd say they've had the car to get pole in the past 4 races, obviously, and they could have the car to do so in the next 6. But Mclaren may not have anything else major coming in the next few races, other cars might. What is true this week might not be next week, the Lotus double drs might be so good they end up blowing everyone away in quali for the next 6 races.
Other cars might have had big upgrades recently but haven't got them setup right yet and those few last tweaks make the difference.
Vettel wasn't exactly miles off Hamilton's best time with his Q2 time, he just couldn't produce another run that good, the car certainly seemed capable of getting within 2th's of Hamilton and the next race might only need to suit the RBR car marginally better than the last.
It's all guesswork, either way a clearer way to say it is if the current cars all stay roughly the same Mclaren and Hamilton could well have a car that is capable of winning the next 6 poles/races, but the reality is, when was the last car able to win 6 in a row? Button only managed 4 in a row IIRC in his Brawn season, Vettel never broke 3 in a row. Is the Mclaren as dominant now as the Brawn was for the first half of 2009 or the RBR at any stage in the past two years?
Chance of Hamilton even getting a podium in 6 races in a row is pretty damn ridiculously low let alone 6 wins.
however the chance of Hamilton gaining a full 25 points back in a single race by winning and Ferrari failing to finish........ depends how helpful Button is
Seriously though Ferrari have had so little bad luck, even his worst luck, being smacked into in the first corner, took out his closest rival also. Somehow it feels like Alonso is due a DNF while Hamilton has a stormer.