I think football fans often make the mistake of looking for consistency in an inconsistent world.
Someone on one of the podcasts recently made a point. Every time Spurs or Arsenal would win a game and then lose one people would always come out with "they're so inconsistent". And his point was yes that's why they're fighting for fourth place. If a team was winning consistently they'd be fighting for the title, but in the end only a couple of teams can do that.