As he rightly said before, anywhere between the Rock and University Heights is almost certainly fine. I've walked Broad and Market later than Devils games. There are certainly streets you don't go on, but not near the Rock. Newark's not perfect, but neither is any city. There are parts of New York that are considerably worse. I'm not saying you should tell a visitor to explore the city or anything, but suggesting that he needs to stay with a pack of Devils fans to be safe at night is just asinine.
Agreed. The ONLY thing I'd be concerned with is maybe somebody trying to offer you drugs somewhere around the corner of Broad and Market. Even that is a slim chance on a game day when they got extra cops out and that tower thing is almost always there too, so it's not that big a concern. It is more desolate if you walk west down Broad towards 78, as well as just above Broad st. there, but it's certainly not a war zone or anything where you have to be worried about stray bullets.
Personally, I don't mind walking around pretty much anywhere even remotely close to downtown later at night. Basically as long as it's semi-well lit, I'm not concerned(good rule of thumb for being anywhere at night) and I've been around downtown at 1-2am and NEVER have been threatened, robbed, etc.
I understand that Newark has problems and problem areas, but by making jokes about whether or not one would be safe there, especially in the downtown area, does nothing but perpetuate the perception that Newark is most dangerous city around.