[littlegreenb18]

If you look at the prequels vs a new hope, the same could be said about Luke. I think the answer there is that Luke is more force sensitive than any Jedi of the past, making his training to get to the same level minimal. And maybe we're seeing the same thing with Rey.

[danmaz74]

Well, just for the sake of fun, I could argue that Luke only confronts one trained Jedi - his father - and that his father never wanted to kill him. Emperor Palpatine, instead, was having an easy time killing him, and was only stopped by Anakin.