Is Rey from Star Wars a Mary Sue?

[KLAMarine]

Tulipanzo said:

I think this post unwillingly highlights why you have a problem, and that is you've come to codify the specific beat of the original trilogy as being "how you make good movies", and have come to resent any deviation from those. 

No, I just dislike the lack of tension Rey's overly-capable character creates. TFA has other issues but this one is a big one for Rey.

Tulipanzo said: 

Kylo Ren is not Darth Vader: as an antagonist he is not scary because he can win, but paradoxically, because he can lose. He is the closest we've seen a character struggle with Light and Dark side. Portraying, such as was the case with Vader, as an immutable, undefeatable villain would have undermined this point. He can be defeated, he can be reasoned with, explain himself and his actions. However he is wrong, and that's why he is a threat.

But he lost to Rey both times. Not much of a threat there. He can't even keep her detained.

Tulipanzo said: 

Furthermore, for Rey to have a foible such as Vader would also not make sense. Her arc, unlike Luke's, is not based in wanting to be part of a larger world, but in being afraid that she's not worthy of living among the legends she grew up idolizing. 
Luke's struggle (see ESB) is that he could become Vader; Rey's struggle is that she could become Kylo. 

This is in TFA? I thought she was waiting for her parents?