You don't go to a Tarantino movie for the coherent and conventional narrative. You go for a good story, surprises and ridiculously enthralling dialogue. When you see the previews for this movie, you get suckered into thinking you are going to see Brad Pitt killing Nazis behind enemy lines. But that is barely a third of it.
I think his movies tap into some sort of primitive desire to see bad people do bad things to even worse people.
The casting in this movie is perfect. Casting Til Schweiger as Hugo Stiglitz was a stroke of genius and assured that it would be monstrous hit in Germany.
Tarantino has been using to his unabashed love for "The Good, the Bad and the Ugly" to fuel hit movie after hit movie. A spaghetti western set during WWII in Europe, with a bunch Ennio Morricone and David Bowie on the soundtrack, no problem. And it totally works.