The 7900GRE is only 10% more expensive than the 7800XT ($50) but offers 15-20% more performance. Compared to the next rung up, the 7900XT which is 40% more cost.
The 4070Ti Super is in an entirely different price and performance class, close to the 7900XT. The regular 4070 would be the direct competitor to the 7800XT/7900GRE.
Cyberpunk has one of the heaviest ray tracing workloads. If that is the yard stick to gauge by then nVidia cards will always look better. Here's Gamers Nexus review of the 7900GRE comparing Cyberpunk ray tracing.
Ryzen R7 5700X | B550 Gaming X | 2x16GB G.Skill 3600 | Radeon RX 7900XT
Ryzen R7 5700G | B550 Gaming X | 2x8GB G.Skill 4000 | Radeon Vega 8 IGP
Ryzen R5 5600 | B550 Gaming Edge | 4x8GB G.Skill 3600 | Radeon RX 6800XT