First of all, thank you Crossover for posting the FS of both 'new' teams.
Peng/Jin - Very pleased that Peng is landing all her jumps!! Also landing both her throws! Peng is skating with more freedom and confidence and Jin doesn't look too bad either. Watch the way they interact with each other at the end of the program. Quite sweet the way Peng was shaking Jin on the shoulders as if to say 'we did it! we did it!'. Good chemistry between them already which will fare for years to come and they are both young.
The negatives - skated quite slow at places and the side by side spin. Chinese pairs are not good with their side by side spins if you have followed pairs and that include my favorite Sui/Han. It is something they need to work on to challenge top places. Peng has a lot of experience to bring to the table as she had skated with Zhang for 2 -3 seasons now.
Yu/Zhang - They will garner more GOEs due to the higher technical level of execution on some elements. Based on this program, they will score higher than Peng/Jin technically. The split triple twist is higher and gorgeous (not that Peng's was bad), more speed and power flowing in and out of elements, for example in the throws and jumps. Like it or lump it, Zhang was a top pair skater so he has more speed across the ice and how to set the lady up to make the elements look more sophisticated.
The negatives - side by side spin not in unison; chemistry wise, there is a coldness. I am not a judge but from watching the videos, I think in general Yu/Zhang will score higher but Peng/Jin is not to be dismissed either. If the other teams make mistakes and they nail everything, they will look very good.
We can only wait and see.