Okay I replaced the model of the Danish with the German. I equipped both. Pressed my next weapon button a random amount of times. Then swung around with both until I thought one of them was slower, dropped it, if it was the Danish I was right.
I got 14/20. That is ofcourse possible by chance, but especially considering I havent played 2h for ages now and I lost the quite accurate feel I have for my main weapons in the case of the Danish, its quite a high rate of success. Most of the times were I was really convinced one was slower I got it right, but sometimes I had no clue.
I would like someone who has used a Danish for some time to try this. It is ofcourse a very subtle difference if there is one, so you need to concentrate.