Liverpool has been good and strong this season compared to previous seasons. Their performance this season has not declined, and I believe they are ready for the Premier League trophy competition this season.
Facing Burnley should not be a hurdle for Liverpool, nor for United, whose performance is still not convincing. This season's competition is probably between Liverpool, Arsenal, and Chelsea. I don't know whether to consider Man City and United.
Liverpool are leading the race for the title already a team with the players they have can not face challenges when they play against a small team like Burnley they are performing well more than expected they are showing early signs that they are ready to win the league this season. Against Burnley is going to end in favour of Liverpool of course they won't find it difficult to defeat them like United did and as for the contenders it's either Liverpool or Arsenal for the title.