Red Bull are probably also scratching their heads that in their ‘overtaking’ set up they were much much faster than their ‘race’ set up, not just across the race but on single laps as well.
They were also forced to come in as Vettel hit the sign, so Vettel ended up on fresh tyres with a bunched up field when the rest of that field were on worn tyres. They didn’t do that by choice – their choice was to keep him out – but they were forced into it.
Then half a dozen cars took themselves out in front of him which obviously helped progress…
They no doubt have good technical ability in the team, but they got very very lucky with this race.