The 9 minutes of added time given by the referee was a very long time, because Brentford played well without getting a card. Statistically for the match, Fulham had more possession of the ball than Brentford, but on the other hand Brentford was superior. The Premier League is difficult to predict, the position of the standings cannot determine the strength or weakness of a club.
Game statistics could have said otherwise, even seemed to favor Fulham. But it's about the end result.
Brentford is one of the dark horse teams this season in the Premier League. You have to get their match statistics, and note that they have lost just 4 of their 24 match.
Because of this victory, Brentford again opened up a great opportunity to over Fulham in the standings. Fulham has played 26 matches, while Brentford has only played 24 matches, so if Brentford is able to maintain their performance then of course they will improve their ranking. Brentford will play Everton at the weekend, while Fulham have a tough challenge from the standings leader.