Ya know, we're talking about all this realism as to whether or not Luke or Rey could do the things they did in their respective trilogies, but I'd like to point out one thing: This is a film franchise where we have a mystical magical force that controls everything, laser swords that stop mid air despite nothing physical stopping them, a giant sentient, walking, growling hairy beast, sentient robots, an old man who can shoot lightning out of his fingertips, a dude with a rocket pack that works (presumably), walking teddy bears, a giant crystal powered superlaser, oh, and hyperspace.
Why can't we accept the fact that Luke and Rey are able to do the things they can when we can accept all of that?