In my opinion I say Star wars, they had a bigger illustrious marketing campaign and history. But truthfully no mortal man can mess with Spielberg's movie making, but the 4th Indiana Jones ruined the magic for me.
That is a hard choice, If it was original trilogy involved I think Star Wars would win. The first and last Indiana Jones (The original three) were the best. The Temple of Doom I did not like at all. Star Wars, well I liked all of them in the orginal trilogy so I guess they pull away with a win.