Score totals and overall play. I agree that Hagens will be a little better offensively, but I disagree that he will be much worse defensively, as James will be similar to Point defensively.
Martone is really good and his combination of size and skill makes GMs salivate. But if Hagens isn't number 1, whoever passes him up will regret it in the long run. He is more skilled, has a better overall game and plays in a more difficult position, the only "shortcoming" is his height.
I would be surprised if he wasn't the first pick and I only see Martone passing Hagens if Porter has a monster season while James has a bad season, which I doubt as I believe he will be a Hobey Baker finalist.