... Calling Sansa the smartest person she knows is a load of **** too considering she's spent no more than a few weeks with her since she returned to Winterfell and has done nothing to support that claim.
Arya killing the NK singlehandedly is completely unearned. It would be like Davos sneaking into the Red Keep to kill Tywin at the end of season 4. People also seem to think she's the best fighter in the show which again is completely unearned. She spent at most a year or so training with the Faceless men, how the hell does some teenage girl, with very little fighting experience outside of lessons with Syrio, become the best fighter in Westeros in such a small period of time? She doesn't, she's only so powerful because she's D&Ds favourite, a borderline Mary Sue...
I’d say she was back at Winterfell for a solid year, if not more while Jon was away; not a few weeks. Enough time to see her sister has become pretty good at being the lady of Winterfell and running things. Something she wouldn’t be able to do. It’s not a stretch for her to respect her like that.
As for comparing her abilities to Davos... come on that’s ridiculous. She grew up being handy at what the boys did in the practice yard. Sneaking out to have a go.
Learnt sword fighting from a master at a young age and practiced every day for years. Spent a lot of time with the hound too eating ******* chicken.
She spent at least a year training with the most feared assassins in that world and passed all their tests, mystical and physical. Even killing one of them.
Even in a fantasy world, it’s not a stretch to say she’s a trained killer.
If she’s a Mary Sue, (really starting to hate that term- it’s a lazy catchall) then so’s every fictional character ever who learnt how to fight. Rocky, Luke skywalker, Daniel san, Bruce Wayne. And she did it over years of us watching without a single montage.