No. Nifong was referring to winning a rape case the old fashioned way.
In this situation he denied the sexual assault aspect of the case because the DNA evidence didn’t match his selected perp. The prosecutorial misconduct here was lying about the rape and suborning perjury by a cop.
Link to motion for new trial
http://www.innocenceproject.org/docs/Howard_Motion_for_New_Trial.pdf
Exhibits
http://www.innocenceproject.org/docs/Howard_Motion_for_New_Trial_EXHIBITS.pdf