The Dortmund team I'm referring to didn't even win the Bundesliga. It's the team with Gotze, Reus, Lewandowski, Gundogan, Hummels (real lack of world beaters there) which beat La Liga champions Real 4-1 at home in route to the UCL final, where they were eventually beaten by one of the best teams seen since Pep's Barca. I'm talking about Dortmund v Liverpool in a one-on-one match, not over the course of the season why many things would come into play. I still maintain that Dortmund would be able to beat this Liverpool team.
If you want to talk about Dortmund in the EPL this season, City are an amazing team certainly and only they would be better than them.