1) Trophies won: both have won 9 World Championships, 7 of them in the top class.
Valentino Rossi has been faithful to Brembo brakes since starting out in 125cc, in 1996, and he still uses them. With 115 GP victories and 9 World Championships (1997, 1999, 2001, 2002, 2003, 2004, 2005, 2008 and 2009), he is the most successful driver ever with Brembo brakes and the only one to have won the World Championship at 125cc, 250cc, 500cc and MotoGP.
Antonio Cairoli, on the other hand, only started using Brembo brakes in 2010, when he joined Ktm, and he has stuck to them ever since. Since then he has won 54 GPs and 6 World Championships: in 2010, 2011, 2012 and 2013 in Mx1, 2014 and 2017 in MxGP.