Whether it's worth it to you depends on your own tastes. I have stayed in both room types and prefer the deluxe building 2 rooms because they are quieter. Building 2 is four stories. The rooms overlook the garden pool. Depending on which room you get, you can sometimes hear some highway noise, but it's not usually too bad. Overall, those rooms do seem to be the quietest of the property. Building 2 is the furthest walk. To me a few extra steps here or there don't matter, but they do seem to matter to some people, especially if there are mobility issues, so I'm mentioning it so at least it's not a surprise.
The building 1 superior rooms are park-facing and, therefore, considered "Disney view" rooms. Your mileage may vary on this, as there are a number of tall trees that partially block the view. DS13 did stand out on the balcony last summer and watch the fireworks with an only partially obstructed view, and that was nice for him as he had spent most of the day in the room rather than the park since he got sick. I found this room a bit too noisy for my tastes though. We were near one of the building corners, so I could hear the faint sounds of the freeway but much louder sounds of street noise and even park noise (until at least midnight). I am a somewhat light sleeper so this was a problem for me. Believe it or not, I do better on the highway side of the building now that they have added some sound-proofing measures to those rooms. Building 1 has seven stories with a gift shop and game room on the first floor.
The in-room amenities for the two room types you asked about are the same.