Normally, when comparing times from a test, it makes the most sense to stick to a single year. But sometimes, there are good reasons to look back at past years, in search of a larger and more universal pattern. Comparing the best laps of riders who were in the championship last year and this year proves to be a highly instructive exercise.
Doing that, there is one thing that immediately leaps out at you. The two riders who improved the most between the two seasons are the two who switched between a Honda and a Ducati. Honda riders will freely tell you that the RC213V is very physical to ride, and the fate of rookies who have come into the championship on a Honda has not been great. Tito Rabat came to MotoGP as Moto2 champion, but struggled to make an impression on the Honda. On a Ducati, he finished the test ahead of factory riders Aleix Espargaro and Andrea Iannone, and just seven tenths behind Lorenzo on the Ducati.