Pole position isn't as much of an advantage as you might think at Interlagos with such a short run to the first braking zone at turn one.
Being on the racing line doesn't help as much as at other tracks because the other side of the grid is equally rubbered in after two qualifying sessions where drivers take the shortest run to the line.
As a result, Verstappen had enough grip to be just enough alongside and once he was on the inside, he could force Norris as wide as he liked, leaving the McLaren man helpless to hold on.
The only blessing for general F1 fans is that the same fate could happen to the Red Bull superstar in Sunday's Grand Prix as he starts from pole.