It's hard to compare the litters as this one is a week older but in a week you will see similar with the other 2 litters. I find this photo funny as she has 1 ear up and one ear down. They start out with their ears up at birth and eventually they flap down. She is midstream in this process.
If you look in the videos, you will see she is starting to truly play. At this stage you would think the younger set will always be behind but actually not true. Puppies aspire to compete, do the same thing as the rest and they will play catch-up. They always do with 7-10 days apart.
Momma Spirit is ever so attentive and she has started playing with her as well.