Mclaren has definitely make a big step forward since winter testing, but lets not forget that there is still a big 0.8sec gap between Mclaren and RBR qualifying pace. As for race pace, I think no one can really tell if Vettel was really pushing to the limit or was he controlling his race. Ultimately, Vettel still finish the race about 22 sec ahead of Lewis, and that is a clear indication of RBR race pace.
IMO Ferrari and Merc failure to delivery might have clouded the fact that Mclaren is still off the pace relative to RBR. I am sure things will look very different if Ferrari and Merc were at the same pace as Mclaren. Then again, it also depends on who you choose to measure against Mclaren.
I would think the result of Sepang (if it doesnt rain) will give us a better indication of the current pecking order