I think he conclude it by analyzing the remaining matches.
I can agree that Liverpool has a higher chance to be the winner because they seem having easier matches.
But Arsenal and Man City look to have the same chance. They still have some big matches, including the match between them (Man City vs Arsenal).
I also think that Liverpool will be the number 1 candidate. Personally, I would rate Manchester City as a strong and comprehensive team, but I would also favor Liverpool to have the upper hand in the race to win this championship. Because Arsenal vs Manchester City will have fierce battles in the Champions League. Meanwhile, Liverpool can entirely devote all their efforts to the Premier League.
But in football, we don't know what crazy things will happen. Arsenal is exploding at the end of the season. Meanwhile, Guardiola is still ambitious about winning the successive treble.
There is no doubt right now we have Liverpool as one of the best and strong candidate for the title even Manchester City is competitive team but their performance having some trouble in past which is costing them right now and if they are not able to win against Arsenal then surely things could be not under their control, and they will be lost chance for ending at the top and Liverpool could be in pool position for the title.
Liverpool is now clearly fighting hard for the two trophies with their strength is good enough for them to have better end in this season and Manchester City and Arsenal both are now facing troubles due to these international friendless which are bringing injuries list long for them as well currently at the top we have all three teams which are having fair chance for ending with double or treble, but this all is never been easy because soccer specially Premier League is never been predictable.