(Speaking as a former cast member for DLR.)
They definitely put a lot of attention into the fine details into the parks compared to the rest, especially their queue design (in fact I didn't mind waiting in line for these parks since the queues were mighty impressive). The cast member interaction and overall cleanliness easily beats out the other parks. There is actually less stuff to do compared to DLR, but it's definitely more focused in the presentation. The parks are also way more spaced out compared to DLR, and also contains a lot more transition/dead spaces. In fact there were times were I felt pretty "unsettled" in the parks due to the lack of background audio.
If there was one thing I thought was a disappointment, it was the fireworks (Christmas Time). It was "OK", but it was shorter and pretty generic. The water Fantasmic and afternoon water Christmas shows were pretty cool though (Santa riding on a fishing yacht LOL). I still prefer the night-time shows/fireworks from DLR, but that's just me.
Shocking thing was the food, which was great in many ways, but oddly lacking in others. Their normal food choices were great in quality and choice and pretty reasonable in price (waaaaaaaaaay better than DLR). Magellan's was a really nice dine-in experience as well. When I went on Christmas, I was pretty shocked that their Christmas themed foods were sort of...lacking. (USJ did a better job with this I felt, at least when I went.)
Probably the biggest contrasting point between the DLR/WDW and TDS/TDL is the crowd feel. In DLR/WDW, especially in DLR, there also a feeling of being rushed and getting on all the rides and seeing all the shows. A lot of "Go go go". But in TDS/TDL there's a way more relaxing, easy going and I would even say "professional" vibe going on, especially with all the people wearing school uniforms, suits/ties, and dresses/high heels.
