My one and half seconds comment was a bit facetious and could better have read “shitloads”, which is just to say; he was a good chunk faster than usual vs the competition and his teammate, and was putting the Williams in the company of cars it had not been anywhere near all season, nor at the race after.
Bob Fernley has said they have the same Quali modes as the Mercedes team, but you don’t know what you don’t have. Ferrari have openly said in previous years that while the engine in the back of a Sauber is a homologated unit, the maps are different. I didn’t think it was so controversial that teams have different maps made available, for a variety of reasons.
Lotus had the famous example a few years back of his Grosjean suddenly having the burners lit mid-race at Spa so as to nick a place from Vettel.