Polish review channel on youtube made detailed review of both of them. (I might confused fang bo b2 with bo carbon, i think they are the same, please correct me if they aren't)
https://www.youtube.com/watch?v=zSW1wA5Hdsk
https://www.youtube.com/watch?v=rOjujlD6J3Q
TL;DW according to them they...