Osaka is a 3-4 hour train ride and a 6+ hour bus ride from Tokyo. While it gets people a great relief from Tokyo and the crowds, it faces the same distance problem that Pyeongchang did for increasing Seoul tourism.
It won't be an upfront benefit but it will be a long term because there is a belief Tokyo plans to step it up next level to increase tourism to Japan already so with so many thing advertise travel to Japan will increase with USJ being a major stop for those who decide to travel the entire country.