#1 Overall, they were the better side
Bayern Munich are by far the biggest side in Germany, and have won almost half of the total Bundesliga titles ever contested.
They are on an unprecedented run of having won each of the last seven titles consecutively, and winning the league title for them is the norm rather than the exception.
They also possess more quality players than the rest of the league, with the current squad boasting multiple world-class players who are among the best in their respective positions on the planet.
In the game against Koln, this difference in quality came to the fore, and despite Koln's best efforts, their hosts were simply too good for them.
They bossed their visitors in every department, controlling 61% of the possession, while they also had 25 shots in the game to Koln's 14, with five of those being on target as against the two managed by Achim Beierlorzer's men. Furthermore, they made 554 passes to the 357 Koln attempted, with a pass completion rate of 86% as against 78%.
Generally, bigger and better teams with more quality players tend to win their less illustrious opponents, and seeing as the Bayern Munich players brought their A-game to the fore in the clash, it was always going to be difficult for Koln to escape the Allianz Arena unscathed.