Baby in utero versus "real" baby

Here goes,
There's a big difference between the baby being inside my body and outside my body. Well duh, but seriously it's difficult to reconcile that this is the same baby. She "acts" different. Remember how I said babies have a personality in utero? Well I was wrong. I thought the baby who was in my tummy was hyper, and had an attitude. Loud noises equaled an angry baby, stuff like that.
Nope, my child is an angel. She sleeps and rarely moves in any way that could be considered hyper. Ive seriously got the most serene and peaceful baby that ever existed.
I love my child more than anything in the world. But it's strange, I feel like I spent nine months getting to know my baby, and when she was born she was completely different than inexpected.
So if I ever hear a naive mother talking about how they know their baby already while their pregnant, I'll smile, because at least in my experience, getting to know your baby doesn't happen until after you have the baby.
I love my baby so much, she's absolutely perfect