People who have never been to L.A. really have no idea how insanely huge it is. Driving to my apartment from the start of city (before you even get to L.A. county) and having the city just keep going and going and going for two hours and not because of traffic jams is something you have to experience to truly understand.
Even though Tokio is absolutely massive, it's just a nice place to be. Not loud or overly crowded (apart from the tourist spots). Its clean and you feel safe. You also don't feel like you'll get scammed on every corner