https://www.techpowerup.com/gpu-specs/radeon-rx-7700-xt.c3911 If ps5pr0 is only as strong as 7700xt it would be terribly weak and not worth buying, unless at 500$, there is a reason ps4pr0 was over 2x more tflops vs base ps4, if we dont get similar jump in power with ps5 base vs pr0 model it would mean sony engeener team fucked up big time.
Btw, dont compare tflops from different gens of gpu's, the 30xx and 40xx series have them inflated, same with 7xxx radeon series vs actual performance improvement they give vs older cards, best to gauge increase in performance is always simply check their actual performance(w/o cpu bottleneck ofc).
Here good example 2080ti so flagship turing is 13,45tf
https://www.techpowerup.com/gpu-specs/geforce-rtx-2080-ti.c3305 while rtx 3070 which on avg has 5% higher performance has 20,31tf, 7700xt that is 13% faster on avg from rtx 2080ti is rated at 35,17tf
rx 6800 that is 2% avg faster from rx 7700xt has only 16,17tf
So if ps5pr0 is similar in performance to 7700xt then it means its only 60% actual more performance from base ps5 which sits at 10,2tf(boosted).