If two teams of a similar standard are challenging for the league then the luckier one will likely win. There is no possible way that performances like Liverpool's last night can be seen as enhancing their likelihood of winning the league other than by the gaining of three undeserved points. Outplayed the entire match despite opponents stupidly getting a red card, three important opposition players off injured, all from Liverpool fouls or flailing arms that were not punished. If repeated throughout the season, more likely to lead to losses than wins.
Of course if they play like that every game then they will unlikely win the league. But winning tight games when you’re not at your best and still taking 3 points is a big help to winning titles.