Does Vader scale from Galen Marek/Starkillers best feats?

Marc Spector wrote:

Zenwolf wrote:Hold up, if many are glad to take authors words for the likes of Sidious or Kun or Dooku or Yoda etc...then why not for Vader saying that as of TFU 3, Vader would show that he is indeed more powerful than Galen/Starkiller? Was that not something that was stated?

That is a good point to bring up, but you should remember that in-universe character statements (that can be false, biased, etc) are not as valid as out of universe statements from source books, 3rd person narrators, authors, etc.

this could be true, but when someone states something wrong in any way, fiction usually gives u the right answer , correcting itself for us, even if its something that we would have to think about to find out. if it doenst do that, then its simply the author/directer, whatever u wanna call it, speaking through the character. how do u think narration works?