Switch 2 vs base PS4/XBO should be kinda like Switch 1 vs PS3/360; not a huge leap, but noticeably newer effects and techniques, and ports of stuff that would have to be butchered to work on the older systems.
PS4 Pro should have the edge in terms of raw bandwidth and throughput, so some multiplats might be higher res on it, but on the other hand, the Jaguar was a poor CPU even by 2013 standards, and Switch 2 will likely have significantly more available RAM, so it should vary on a game by game basis.
Last gen games may push more pixels on PS4 Pro, but games that are CPU or RAM bound should fare better on Switch 2.







