I'm a self-confessed Sony boy but I am all up for some competition because it makes Sony have to step up. I'm really impressed with the fact that Microsoft improved the Xbox One S on many levels(size, internal power supply, etc, although the OG PS4 had these features on launch) and that they included an UHD blu-ray player. I'm probably in the minority but I would have bought a PS4 day fucken one had it have come with one.
I don't think the Scorpio will turn the tide because it still will essentially be tied to the Xbox One library, will cost much more than the PS4 Slim/Xbox One S and that Sony has better and more exclusives. The Scorpio will most like play multiplatform games at a higher resolution/frame rate than the Pro but that remains to be seen as the checkerboard rendering that it supposedly a Sony exclusive feature is very impressive and costs less(performance-wise) than true 4K rendering.
This is an animated picture comparing native rendering, checkerboard and upscaling(must be clicked on to animate):








