With 4.2 Tflops they already aim for 4K CBR on all their big exclusive (single player) games (Horizon, God of War, Days gone, Death Stranding, TLOU2).Here's the scenario I can see proceeding the upcoming game comparison between PS5 and Scarlett family if taking into account of a 10 TF PS5 ($399), a 12 TF Anaconda ($499) and a 4 - 6 TF Lockhart ($299).
PS5: Offering the best looking exclusives by far since the base line is 10 TF and not chained by a much weaker SKU, all games mostly render at native 1800p, with 4k cbr used a plenty and occasional native 4k titles.
Anaconda: Offering the best looking Multiplatforms, 90% of all games render at native 4k, the rest shares between 1800p, dynamic 4k and 4k cbr. Exclusives while retain pristine native 4k IQ suffer greatly from a 4 - 6 TF Lockhart in terms of sheer graphics quality.
Lockhart: Worst looking and performing on all games, native 1080p - 1440p, using all kinds of dynamic res and checkerboarding too. Games coded for a base 4 - 6 TF console should still look far better than the best of Scorpio tho even at 1080p.
Pick your poison folks.
1800p is around 38% more pixels than 1537p, and with a much more efficient 10tflops GPU (allegedly), I don't see how they could aim for only 1800p in any of their big games for PS5 (4K CBR being roughly native 1537p).
I don't know if they'll aim for native or 4K CBR, but I am pretty sure 4K will be the new 1080p for Sony. Maybe they improve the CBR rendering, particularly in motion (CBR is apparently already pretty good in the last Anthem game compared to native similar res), and an improved CBR could be enough for them, and us. But it's going to be '4K' for them, not 1800p, which is what we have now in some Pro games.
And a 4-6tflops console will be a problem for both Microsoft exclusive games and multiplat games IMO. But at least it's going to be a good thing for Sony games. Comparatively they'll shine even more !