OK, here's some things that DLR doesn't have that WDW does that make me long for FL. Country Bears, Monster's Laugh Floor, People Mover, Mickey's Philharmagic (what is DL waiting for on this one?), Indiana Jones Stunt Show, Beauty&theBeast Live, Double Dumbo with play area, Expedition Everest, Kilamanjaro Safari, two great animal trails that kick San Diego Zoo's butt by themselves, Festival of the Lion King, Finding Nemo Musical, and the 7 Dwarfs mine coaster. These are attractions that aren't duplicated/replaced at DLR with the exception of maybe Aladdin as a live show (vs. 4 others at DHS/AK). Again, I'm not even adding all the great stuff at Epcot.
To me, it's just being a little slanted to say DL can keep up with WDW. There's two big reasons I'm doing DL with an AP for the next year: Cars Land (which is great) and money (nearly $2K just to fly us there). If the money was there, it would be hard for me to pass up all those great attractions (and resorts and restaurants) that WDW tempts me with day by day. But that's just me.