Same exact ride. The que is a bit different. Also it doesn't have the outdoor Star Wars icons that the MGM version has. It also doesn't have fastpass anymore at DL. Since its in Tomorrowland, the lines are longer most of the time than in MGM where I can always walk right on it for the most part.
I will say Buzz at DL is a bit different. The guns come out so you can aim which is nice. I get way more points than the MK version since I can shoot easier.
And Space Mountain at DL is totally different, don't miss it!
For that matter read all of Hydroguy's tips, there is a compilation sticky at the top of the Disneyland board. Very informative, detailed reading that has helped tons of people, newbies and vets alike.