This creator put the two audios together so you hear one artist in one ear and one in the other. It turned out so beautiful! Give it a listen.
Jungkook and Justin Bieber! (earphones)
I agree with both of you. I am not a JB fan by any means so I may be biased here, but I think Kookie's version has more feeling in it. His voice is more emotive and I like the color of Kookie's voice better. He has more control over his vocal chords and his breathing so it produces a better product and he has an airy quality to his voice that lends to being more emotive.
@UnicornSuga I actually have to agree with you. although I am a fan of jb's more recent music (just his music, he's a little turd) I have to give it to Kookie for slaying this song. however I really liked the harmony made from this idea. I didnt know they did things like this for exo :o