Who would have thought that Fluminense would give Borussia Dortmund a hard time, actually being the better team in the match... Honestly, I thought Fluminense would get thrashed, since they live in completely different realities. I'm genuinely very surprised by this result.
Honestly your view is the same as mine before their match started, but somehow Fluminense could do the opposite, it is indeed a game of 11 vs 11 but if you compare strength and quality it is clear that Fluminense is far behind Dortmund, I was fooled today by the bookmaker odds. 
Dortmund not only struggled to score goals but they also couldn't play a good game, 7 shots with 3 on target isn't that funny from one of the Bundesliga title challengers?