Just think of it as "the perfect storm"; right driver, right team, right time.
Vettel undoubtedly has the skill.
His team mate is a good supporting driver but is in no danger of taking points off Vettel on most days.
The Red Bull car is currently the class of the field in terms of performance, speed and reliability.
Then there's Newey who needs no explanation.
The pit crew make very few mistakes.
Red Bull have the financial resources and aren't afraid to use them, even dropping out of FOTA so they can take full advantage.
Finally there's Horner who isn't afraid to push the boundaries and seemingly is able to convince the stewards that black is white, on occasion.
Lastly, their main rivals have been unable to match them in a lot of the areas above, for one reason or another.
It's no surprise therefore that they are on for the triple double this weekend.