Who wins? Now for me this is a hard one and Im sad to say that Deathstroke just might win but I still have to go with DD.
In broad daylight and out in the open, I'd give the win to Deathstroke. However, it all depends on the environment. Daredevil, probably more than any other hero, uses his environment to his advantage. His radar sense gives him an edge in pitch-black spaces, or areas covered in fog or smoke. The environment is what really comes into play. Depending on the environment, that would determine the winner.