it depends on the people to be peaceful! The are muslims who arent peaceful and even christian (and other religios people) but you can't really say which religion is the most peacefull religion!
All religion say : CARE 4 PEACE ! But not all groups of people follow the rules of their religion!
There are Christian ,muslim, jewish ..... TERORIST!!! also pls dont compare the religion who has most peace with eachother
btw im muslim.