The driver matters more when the cars are close in performance. Any driver on the grid would have been either World Champion or runner up in a Ferrari in 2002 and 2004, Red Bull 2011 and 2013, Mercedes in 2014-2016 and maybe 2019. The only opponent would be the team mate. The car matters nearly zero in the fight with a mate, that is only about driving skill: how to be fast and when, when to try to overtake and when not, etc. Most F1 drivers are very fast but not all of them are as wise in their driving as they should be. Some of them regularly end a race and score points, others regularly crash or throw away good results. (And some drivers are there because they are backed by sponsors with the money needed by the teams they drive for.)