The thing is, they aren't. Ps4 pro is just an upgraded ps4. Like a slim revision, only for 4k. It is not changing any of Sony's plans moving forward. Ie, there will be a console gen reset when ps5 launched.
Scorpio is not solely an upgrade to Xbox one for 4k. It is being positioned as the future of ms's "generation less" consoles. Scorpio will play Xbox one games, but also the games that come out in the future, when Scorpios own succusor is revealed. This backwards and forwards comparable game plan needs a console that is designed for the present but also mindful of the future. For this reason, unlike the pro, I just don't see jaguar as being sufficient.