9 times out of 10 the fastest car always wins regardless of the driver and it has been like that for years.
I would say imo once a driver gets to a certain standard in a modern formula 1 race.
The car = 75% team race tactics = 15% driver = 10%.
Exceptions are rare. e.g. bad weather with Stewart winning at Nurnigberg about 7 yrs ago.
Damon in the Arrows on the right tyres if I remember right in Hungary coming 2nd and nearly winning.
Senna, Michael and Prost could get more out of an 'average mid grid' car than most and would not settle for just going through the motions.
To much money for being very average has ruined most of professional sport.