I was in DL in '76 & '78(?) w/my parents. Not really fair for me to compare the two since all my trips to WDW have been as an adult w/my family.
However
There is just SO MUCH MORE TO DO in WDW. Even though DL has grown a lot, I just like the total escape from reality you get at WDW. I don't want to ride the Matterhorn and overlook the Anaheim expressway
. Or stare at the Howard Johnson's .
I do remember that rides like Small World are presented much better in DL. I can't remember PP but I know a lot of Buzzers rate it higher at DL vs WDW.
My wife has never been to DL and I would like to take her there. The only thing is, I don't fly so it would be a long trek across country (from Pittsburgh) to get there. Plus that's a lot of time and money to invest in something that you may come away from disappointed. Whereas WDW is a sure thing for us.