I can't think of much apart from the location to split the two hotels apart to be honest.
They've both got a fairly basic (no slides etc) pool, they both have cooked breakfasts.
I suppose the DLH has it's character welcome at breakfast, but if you walked there early enough on the way to the parks then you could take part in that anyway as it's just held outside the restaurants which is a public area.
The DLH has the spa, but again I believe that's accessible to all (not 100% sure though).
The DLH has a nightly turn down service (not sure if the new york gets this) which is nice, but not a huge plus. We were often in our room when they came to do this so didn't get it anyway - they just gave use the chocolates and moved on.
To be totally honest - I'd go for the New York. The DLH is lovely, but in my opinion, it's a lot of money for nothing major extra over the new york. If you're eating an evening meal in the village or heading to hurricanes or the shops, then that aspect of the location is lot as you have to walk back from the village to the DLH just as you would walk back to any other hotel. I suppose the location is a plus in the mornings or if you need to pop back to the hotel, but not everybody does that so it's a personal preference.