Indeed, I think the improvement is going to be a lot larger than people seem to think. People are focusing way too much on the GPU TF number. That is a big deal, but it doesn't take into account a better/faster CPU, improved GPU architecture, and more/faster memory and memory controllers. Assuming this thing has Zen APU based CPU cores and Polaris GPU architecture, then there are going to be major efficiency upgrades that take this thing way beyond a simple XBO games at 4K upgrade. I think 4K will be to Scorpio what 1080p is to PS4, not XBO. On top of that we will likely see improved textures when available, improved texture filtering, longer draw distances and LOD, improved effects quality, and more stable frame rates.
6TF is nice, but it's all the memory improvements that has me excited. Considering Scorpio will likely be running the same OS as XBO, almost all of the added memory should be going to games. So if it's 12GB then we could be going from 5GB for games to around 9GB for games. Combine that fact with nearly triple the memory bandwidth, improved memory controllers, and the memory compression built into Polaris, and the results could be incredible.