He specifically said he was blown away by the scale of the project. This was my reaction as well when I saw what they were planning with DHS. The budget here is a fraction of what the DHS budget is, but it's the same as what RSR at DLR cost. EPCOT already has all the infrastructure in place, so infrastructure rehabilitation that will not have to be done would come as a great savings for this project, allowing all of it to go into attractions. Buildings are also in place, so that's a huge savings too. My guess is that the project will bring new attractions to pavilions already in place such as Imagination and WoL.
That makes sense. If FEA cost $150 million for a pavilion already in place, two pavilions with $50 million left over is $350 million. That $50 million is enough to shoot a new film and include minor AA enhancements for UoE.