To say that Arsenal does not vary from season to season and Liverpool still has its untapped potential we have to understand that each season is different and cannot be benchmarked against the other. Arsenal may well still be on the quest for establishing the foundations that will get them there, a season without a trophy can also be a long time to look at your options and strengthen yourself.
In two latest seasons, Arsenal rose a lot and became a main competitor against Manchester City in Premier League. Last season Liverpool failed to challenge Manchester City too much for Premier League title in a last season of Klopp with them. Surprise is in this season, Arsenal suddenly got big problems and had worse performances than expected since the season start, and Liverpool are playing over any expectation.
While Liverpool’s defence is a major question, the offence is attacking as it has rarely been seen, and if it sustains that performance through the season, this could be a historic year. As fans we should appreciate any side that can endure and compete in a league as competitive as the Premier League because hard work does not only count during the final third, throughout the season it does too.
Liverpool faced with uncertain season by having a new coach but so far they have been playing very impressively. In their defense, with only 6 conceded goals so far after 11 matches, they look to have a bunker in front of their goalkeeper. With only 6 conceded goals, Liverpool have a best defense system in Premier League this season.
https://www.premierleague.com/tables