Quite why the change nobody was sure, Mercedes suggesting it may have been to do with the stronger breeze. As a generalisation, we would expect the Mercedes to be quicker in the first two sectors, the Red Bull in the ultimate one. How that each one balances out, though, can change from at some point to the subsequent. A completely different track temperature or observe floor can fully change the hierarchy between the automobiles, so evenly-matched are they. This could presumably be excellent news…