The problem with the Swedish police and legal system is seldom that they do bad things. The problem is rather that the employees doesn't get much done except drink coffee and administrate.

There is another possibility: Theoretically, both the women might be paid by CIA when Assange is extradited for questioning. But that is just another stupid conspiracy theory.

Edit: Clarity.

Edit 2: It is hard to take the arguments seriously, since Assange originally went to Sweden voluntarily without fearing extradition to USA. Wikileaks should just get a saner guy as front figure.