Chris and Hayley have totally different styles. Chris was always very confident and solid on the ice, but his style was messy. His technique was always playing catch-up with his general ice-covering ability. That's not surprising given his previous skating experience.
Hayley on the other hand is a very sharp mover. It was the timing in her last routine that was so impressive and the skating is solid enough. But her experience is more dance.
While Chris always wanted to try the next move, before he'd fully perfected the previous one. Hayley wants to work on perfecting whatever it is she is doing. It is inevitable that people will play to their strengths, but I did think that in doing so, Chris often ignored his weaknesses. I didn't see the last tour, but by the sound of things he has been working on his lines etc, so all good.