Possibly the likes of Valencia, Malaga, Bilbao, Athletico are better than Schlake, M'Gladbacks, Werder, Hoffenhium, Wolfsburg; but the latter teams have had taken more points off the title winning teams than the former. A league can only be harder for any team if others have been troubling them in their quest for title. It's not like i am basing this on just one season. The points that those 2 team accumulate is high for quite a few seasons. It can also prove that the teams have very low resistance for Real Madrid's second gear attacks, let alone facing them at full throttle.