I lived in LA for a couple years, and went to DL while we were there. In fact, my BF has been to DL three times, without ever being to WDW. I think he's going to be really surprised at the differences.
I have a lot of affection for DL. It was the first Disney park I went to, back in the very early 1970's. It's the whole reason I'm in my current career--it had a profound influence on me. I still love it.
I do notice the differences now that I'm older, though, especially in more recent visits. It's smaller and more cramped than WDW, with narrow sidewalks. It is almost always crowded (because in a metropolitan area the size of LA, there are always people to fill it up, regardless of the season). Two of the hotels are pretty much un-themed, especially in comparison to WDW resorts.
DL also has a very high quotient of loud, rude teenagers there without adult supervision. I'm not being negative--I think I was probably pretty annoying as a teenager too--but every day after about 3:00, you just get huge swarms of unsupervised teens.
Like I said, I love both DL and WDW, and I think every Disney fan should experience both. My boyfriend, on the other hand, hates loud teens and crowds, so I'm really eager for him to see WDW.
