In the video of Dani California they imitate loads of rock bands from different eras. This song does sound pretty similar to Mary janes last dance but thats cuz they had the same producer (rick rubin). Anyway Dani California
is sped up and the first 8 bars of both songs sound similar, the chords are not exactly the same, with "Mary Jane's Last Dance" being "Am, G, D, Am" and "Dani California" being "Am, G, Dm, Am". But yeah that is pretty similar.