I've always had the impression that Danny doesn't actually know how good he is. He has put in 13+ hours some days, to learn the dance, and from what Oti has to say about him, he really does not appreciate how well able he is to dance her choreography. Learning in isolation in the way they have to on Strictly doesn't really give you any measure of how easy/fast etc the other celebs pick up the choreography or what they find difficult. You just see the Friday rehearsals. So for me, I find Danny humble and slightly bemused when anyone says how good he is - always quick to praise Oti rather than take the credit for himself.