Not sure which TLJ you people watched, but Luke had Kylo beat: when Luke slid under Kylo's attack, Luke could have easily struck out and killed Kylo as Kylo idiotically left himself open due to his emo-rage. This is a fact.
There's also the fact that Kylo didn't want to initially face Luke, why he ordered the barrage and only went out to face Luke after that seemingly failed.