People explaining away two non-trained newbies, one with no Force inherent, holding off Kylo have to be kidding. The whole series we know lightsabers take a load of training to get barely right and these jokers aren't cutting their own arms off? Why didn't he just force-freeze or force-choke both of them and stab them to bits like Han? I get that Kylo isn't actually that good - but, wait, it does, he can freeze a freaking blaster bolt in midair, talk to people, walk away after an hour, and it's still there - but the movie is saying Luke, one of the most powerful Jedi ever, should never have bothered training with Yoda, and any Sanitation-level stormtrooper can take on a powerful Sith Lord or whatever the he is.
That's only one of the increasingly ridiculous parts in an increasingly bad movie. Sorely disappointed, and I haven't been a Star Wars fan for years.