Careers360 and Quora both are completely different platforms while on careers360 you get the answers specific to career and personalized questions while on Quora students may not get all the questions what they have in their mind Quora is a broad platform which covers topic from various ranges but careers360 is very specific to careers and studies. You cannot judge which one is best because on Quora you may find some answers which are completely business oriented and promotional oriented in which some writer may be using that platform to promote some company or some books which is not the case with careers360 question and answer platform.