Let's talk about Sansa and Arya for a moment.
I write this in reference to my previous post in defense of the insults that the character of Sansa receives, and I am sorry that a part of what I wrote has been misunderstood by some people so I want to clarify this topic!
I'm not belittling Arya! In fact, she's one of my favorite characters in all of ASOIAF and I love the relationship she and Sansa have. What I said is simply my opinion (which I decided to write because it is one of the most discussed topics in the fandom).
That being said, I truly believe that Arya would not have survived what Sansa went through just as Sansa would not have survived what Arya went through.
Clearly I wasn't trying to defend Sansa by saying this as I think she would have died right away if she had found herself in her sister's situation. Sansa, as intelligent as she is, does not have the skills and personality of Arya and that would have killed her.
Same thing for Arya, as much as her character has grown and become strong, this in my opinion would not have happened in King's Landing because she wouldn't have received the same training, therefore she too would have died immediately. Arya, as sly as she is, is not as smart as her sister sansa.
I love how different they are, and as much as I hate what happened to both of them, these are the right experiences for them because they contributed to the growth of their characters and what they have become.
However, this is just my opinion, so I would be curious and happy to hear opinions from the fandom different from mine!