I agree. There are always some skaters who transcend cultural differences and become almost universal. And only truly gifted (or lucky?) can achieve that. Masterpieces of any art form too, as you have pointed out.
However, how to and how much one expresses their feelings, emotions or 'heart' in that matter is a product of a culture, as well as individual traits. In a recent talk show on TV, Shizuka Arakawa and Daisuke Takahashi talked about their experience of having to show the programmes choreographed by foreign choreographers for the first time in Japan, and how embarrassed they were then. (Funnily enough, the programmes they said they were most shy to show were both done by Morozov.) They said they had not minded it much while practising abroad, but they had became too self-conscious and shy once back in Japan.
It is a slightly different issue, but Daisuke also reckons there are certain things he could not yet express because of his lack of real life experiences. He thinks his choreographer Pauquale Camerlengo was much better at expressing the emotions contained in this season's long programme, and only men in their 40's or above, who have experienced ups and downs the life offers, can truly express intensity of the programme. 'I cannot beat men in the 30's and 40's on that', he said. He also says each mistakes and hardship he has to endure helps him to be a better performer. This is perhaps the reason why skaters in the twilight years of their competitive career can bring a greater degree of sophistication and complexity of expression to the programmes, which some younger skaters are not capable of.