I would compare the Champions League chase to a game against one of the traditional 'big four'. We're currently a goal up and have played around 65 minutes. Chances are, quality will eventually tell and we'll be pegged back. But there is still hope that we just dig in, despite other teams having better quality than us in truth, and hold on for that win. The same could happen here - we aren't going to play like Arsenal did today, but 3 points is 3 points and if we beat Spurs tomorrow, it'll be the equivalent of another big four attack being pelted away to the half-way line. Withstanding 9 more of those will be tough, but not impossible.
What i'm trying to say is that you don't need to be a better football team than Arsenal to finish above them. Chances are, after 38 games, or 90 minutes in my analogy, the quality shows, but sometimes your opposition hit the post a few times and you grind it out. That's what we need to do, and can do. It's just going to be, in the word of MON, 'exceptionally difficult'.
Am I talking nonsense, or does that make sense?