Hollywood's event has A LOT of competition here in SoCal... Even though the different events have drastically varying budgets, the haunt events here support each other while also trying to one-up the other. Which is why we end up with haunt conventions like Monsterpalooza (woo can't wait for April 14th's HHN panel) & ScareLA..
And lets just remember that Orlando's event wouldn't exist if Hollywood hadn't attempted HHN in 1986, and that wouldn't have happened if it hadn't been for Knott's Scary Farm starting the haunt tradition.
And unlike Orlando, Hollywood's event believes in actual "sold out" nights rather than "every space of concrete needs to have a body filling it whether its hazardous or not".