The pre-season games have never been predictive of their performance during the season. That is why sometimes I like to place bets against the big teams when they have these pre-season tests. It has paid off well a couple of times for me. They often don't field their best eleven players or rotate like hell, or the players are not willing to go for it at 100% because they don't want to risk injuries in meaningless games. Pre-season games are worthless if you want to use them as your information to make predictions for the serious games.
You can't adjudge a team or rate a team by their performance in a preseason tour because such matches are not played with utmost seriousness as a result of their importance, nevertheless the Leverkusen side are far more sophisticated and well equipped in terms of player ratings and perhaps this is a major factor that could also determine the outcome or the result of the match.