Black was awesome online if you had a group that were interested in fighting, much like Battle Royale games today - sadly, being in a group like that is harder than it should be. Even back then there were people that camped, hid, didn't want any part of the actual fight till they could come in with an advantage. That meant a lot of boring driving around looking for them.
Kind of like Battle Royale games if they did not shrink the map and force players into smaller areas as time went on. If Sony would have added some kind of shrinking of the playable area, it would have been a game changer for Black.