if you split a season into 2-3 races, than look at last year, there were phases where different drivers dominated, but i wouldnt go so far to say, that those drivers were dominating our sport. it is also a conglomerate of some factors.
You know what I mean. If Vettel has two victories and one second place after three rounds, he is dominating indeed at the moment... could change from the next race though.
till know vettel was just the rb driver who managed to drive better than webber, although china can be called a intern team mistake when looking at webber.