If anyone has an unfair advantage surely it is Jason? He has been performing (singing AND dancing) in front of huge live audiences and cameras for years.
This year's contestants that aren't from a music background are in a minority. I think Audley started with the least background advantage and is handicapped by his size, followed by Russell. Both are doing far better than I expected.
How can Audley keep a proper posture when his partner is so much smaller? He can't extend his arms when in hold - his arms are far too long.
All in all, I think this is a great series. Thank heavens Nancy has gone, although I don't think Anton done her any favours at all. He is either a rotten teacher or has a very mean streak.