Craig is actually wrong in terms of the general public. Changes lives is far, far, too over dramatic except for a handful of cases - for example, where dance lessons are started or whatever. What is more likely to be true is that a winning couple appeal for a variety of reasons to their voting supporters, in addition to the dance.
In terms of Jay, of course he didn't change my life, but I enjoyed their dancing more than the others. He offered something different. His quiet manner appealed to me.
Even so, it was a difficult year to choose. They were all worthy winners and I think it a pity they didn't simply create three mini trophies and let them all win. However, if I think about who I would rewatch it will be J and A for many, many, of their dances.