Before the start of the F1 2021 season, it was said that low rake F1 cars would be at a disadvantage because of new aerodynamic regulations by FIA. Red Bull with a high rake F1 car was slated to win all the races and they did win the first few races, if not comfortably.
Mercedes with a low rake design subsequently started competing in latter half of the season with a better straight line speed in few tracks. The same did not happen with Aston Martin that is also running on a Mercedes ICE.
With both the teams being so similar, what exactly happened to Mercedes that could not happen to Aston Martin. Mercedes does have a stake in Aston Martin but how come the former is so much superior with the same engine?