LL Cool J pulled a huge crowd with that 50 Years Of Hip Hop medley gimmick at the new basketball arena in San Francisco last year with higher ticket prices so I dont think the line up was the problem, i think its just that the bottom has started to fall out of the concert bidness here in California
Theres been several news stories about all the concerts and long established music festivals that had to be cancelled over the summer out here because people just cant afford it anymore, the insane cost of living out here has everyone at the breaking point and obviously entertainment is gonna be one of the first things to get cut out of a person's budget, especially with the massive increase in ticket prices, concessions, parking, etc.
I think people had to make a choose between the two concerts on back to back weekends and out here gangsta rap is gonna win out over East Coast hip hop everytime
So I guess technically that does mean that the lineup was the problem but you get my point LoL