I think it's the curvature of the world that's making it run so well on mobile. There's never to much models on-screen to draw.
PS4 specs: ~1.84 TFLOPS FP32, 18 GCN CUs @ 800 MHz, 8 GB GDDR5 @ 176 GB/s.
I think maybe some released-yesterday phone might get close on spikes/bursts, but not on any sustained loads, like gaming, nor would the beat the PS4 on image quality either.
https://www.cpu-monkey.com/en/compare_cpu-sony_playstation_5...
Shader throughput (shader count times base clock) is similar too: https://gadgetversus.com/processor/apple-a15-bionic-vs-amd-l...
The iPhone wins on boost shader throughput by a lot, but that’ll throttle. The ps4 has more, slower gpu cores. Not sure how gpu memory bandwidth compares.
This game is beautiful in every way.