The car is dominant at this kind of circuit? I like and Red Bull and S. Vettel as much as the next guy, but there isn't anything that supports that statement.
The car is dominant at near every type of circuit, bar Monza. Not just the RB7, but RB in general for the past 2 seasons. Sepang has a lot of high speed bends and as we have seen in the last couple of seasons at tracks like Sepang, Catalunya, Hungaroring, Silverstone etc. that the Red Bull leaves competitors in the dust on the high speed sections, and we even saw this in the final sector in Melbourne. Sure, it has long straights but it's a long lap and the straights are nowhere near as long as for example, Spa (Where Red Bull was still pole and challenging for the lead the entire race distance in 2010). Infact, i'd put it on par with Silverstone for basic track characteristics, where Red Bull have dominated since the regulation changes at the start of 2009. Little has changed, this years cars are evolutions of last years cars and they all share the same basic characteristics as last years cars otherwise the designers are idiots and wasted a couple of years heading in the wrong development direction and wasting significant resources.
The only thing we don't really know is how the tyres will react on this sort of track in the sort of heat we usually get in Malaysia (If it's dry). That's probably the only thing that could work against Red Bull. But apart from that, it's only right to assume the Red Bull will be dominant on pace at this circuit as it follows the trend of the previous two years and the previous race too.
Also, simply because he has the fastest car and he is the championship leader doesn't mean he's going to go off. There isn't that much pressure being at the top of the standings going in to the second race. There's always pressure to win and do well, but hardly as much now as there will be.
Him being the championship leader relies solely on him winning in Australia. You could say, thinking there's only been one race, that the winner of the previous race, at any point during the season whether we're at Interlagos or Silverstone or Spa, has just as much pressure on him as Vettel will this weekend. It doesn't matter.
There is still pressure. Before this point, the
only time Vettel has been the championship leader was at the end of the final race last year when he won it. He's never been under pressure to maintain his championship lead before (Unless you count provisional points during the course of a race - Though I will admit that reliability, not succumbing to pressure was the main factor involved in not winning those races). Vettel seems to excel when he's leading a race from pole, that's where he is untouchable. He's still young and we haven't seen enough of him yet to know how well he copes under pressure, and this is more pressure than he had for most of last year because more is expected of him.
Though I do agree with the bit in bold, that is what makes it simply a prediction.