If everyone thought the same, there would be peace on earth. If at Crucifix's battle everything ends in a bloodbath in China, things are more diplomatic. Although things started as at Crucifix, the situation was completely different. without one of the parties suffering the loss of both parties leaving only the wounded. However, let's say that when you have some more studies, you are better off with diplomacy than when you train all your life just to assassinate someone.
P s: I posted later because The Order series is back to life. Somehow I will try to make episodes for both series but I promise nothing. Given that New World is close to the final, so a small spoiler.