Should I waste my best ball on Reshiram or Kyurem? This may be stupid but..... I saw lot of people wasting their master ball on Zekrom and Reshiram! This is on Bw2
The answer here is Kyurem.
Reason? Reshiram has a higher catch rate than Kyurem, meaning it is caught more easily.
Reshiram: 45 Kyurem: 3