-Current versions of each in 616 Continuity (David still doesn't have access to his reality warping powers that he keeps on talking about in X-Men:Legacy) and in character for both. Norrin Radd believes that David is a threat to Reality despite not having access to his "bigger guns". David believes that taking out the Surfer will show the world that Mutants are protectors, with him having taken out one of the most powerful individuals in the universe, and help their overall image. Both are given a general history of each other (David knows the Silver Surfer was the herald of Galactus, Norrin knows that Legion is the son of Charles Xavier and believes him incredibly unstable)
-Location is Marvel 616 Earth, David starts out in London England, Surfer starts at the edge of The Troposphere roughly 17 km above the planet.
-No prep time, meaning:
-Surfer cannot go to the Fantastic 4 or Avengers for help, or use any of their stuff.
-David cannot talk to anyone he's worked with, no help from Blindfold or access to any of the bodies that the Red Skull left behind.
Win by K.O. / Death / or BFR IF they cannot get back to Earth.
If I have left anything out I will edit it back in, just let me know.