Why do you even want them to use unquestionably lesser GPUs as an PS5 equivalent? That would be absolutely baseless and ignorant. 6600xt/6700 are matching and/or beating 6700xt across gaming benchmarks in pc space now? For one, all those three GPUs have about the same rasterization and pixel fill rate whereas PS5 is significantly ahead of XSX in those areas. Second RX 6700/XT have 125-150% (!) more Infinity Cache compared to 6600xt which is very significant, not to mention up to 50% more VRAM bandwidth again not reflecting PS5/XSX situation at all. I think one should be at least somewhat familiar with the specifications of PS5/XSX in this third year of the generation and about those PC GPUs before attempting to make arbitrary comparisons. In the end utilizing the same GPU for both would be much less flawed as a methodology.
you can have a 10 tflops 6700-dumb-xt with only 50 gb/s bandwidth but he would still go like "ha!! 10 tflops rdna 2gpu getting destroyed by ps5!!1"
we literally have a POS 5.76 tflops rdna2 (6500xt) gpu that cannot even match series s in most instances due to puny 140 gb/s bandwidth. I'm sure 140-160 gb/s bandwidth is not even enough for 4 tflops rdna2 to begin with, let alone a 5.76 tflops counterpart
6500xt is so bandwidth starved to a point it cannot even reliably beat a 4.4 tflops turing counterpart
heck, it will get rekted by an ancient gtx 1060 at 4.3 tflops in bandwidth heavy games
this is not even console to PC comparison. I literally compare a brand new architecture with a relic architecture. properly bandwidth equipped cards perform like they should.
6500xt/6600xt are unbalanced cards that have puny bandwidth.
despite having having 2.27 times more TFLOPS, much newer architecture, proper "driver" optimizations by AMD, 6600xt is only 2.1x times faster than the 1060. puny 6600xt only has weak 256 gb/s bandwidth whereas even the midrange super cheap 1060 had 192 gb/s bandwidth back in 2016. 6600xt and alike performs most optimal when you feed them upwards of 400 gb/s+ of bandwidth, which PS5 can clearly do (out of 448 gb/s total bandwidth, 40-50 gb/s at best will be used by Zen 2 CPU, as you can hit 60 FPS targets most of the time on PC with similarly specced CPUs with similarly specced bandwidths).
people have to learn to stop thinking about GPUs in a TFLOPS vacuum. even 6700xt is heavily bandwidth starved. it wont outperform a ps5 by %30 in all cases.
current GPU levels would demands for upwards of 600 gb/s. this is why 3080 and co. have crazy amounts of bandwidth. otherwise there wouldn't be much of a point to have crazy powerful core. if you cant feed the core properly with high bandwidth, TFLOPS/core becomes pretty pointless.
this is why 4070ti can roflstomp a lot of GPUs at 1440p/1080p but fails horrendously at 4K. it can roflstomp a 3080 at 1440p/1080p in games where bandwidth is not a issue. however at native 4K, with ray tracing, there are a lot of instances where it gets rekt by 3080 instead. its all bandwidth.