The dominant factor this weekend was the increased performance advantage Mercedes had over the field – either through the car being let loose upon the track that's most demanding of aerodynamics, or through the effectiveness of its upgrades.
Hamilton had scrabbled a time within 0.1sec of Bottas’ subsequent run in Q2, but it didn’t come together for him thereafter.
In addition to the bodywork upgrades seen on the Ferrari in Baku, here there was a revised front wing with a wider footplate, aiding the outwash around the front tyre and thereby also helping speed up the flow down the bodysides.
This track gives greater lap time reward for aerodynamic performance than any other – and Merc’s advantage over the rest of the field was enhanced considerably.
Ferrari was quickest in January with a 1min 16.2sec lap, a time that Vettel pretty much equalled on a slower track on Saturday.