BTS and Momoiro Clover Z

i am sure you have questions. this isn't any type of a vs thread or who does this or that better. it is really an experiment.

the other day i made a thread

here

i featured momoiro and another user shared a bts video. There are probably not two more opposite groups in pop music than these two, but both have overcome big odds by finding success from small companies. Me and the other user agreed both groups put on high energy shows with a lot of personality, so i was wondering what other traits do you think successful groups especially those who maybe start out a bit lower share.