So, the price and performance of a 2080 with significantly higher power consumption and without the tensor and ray tracing cores? Meh.
VII's AI instructions are integrated with the main compute units like Tegra X1's SMs.
Which means that if it uses them for AI then they are unavailable for anything else.
The arguments are similar to discrete shaders type vs unified shaders. RTX 2080 has lower CUDA cores FMAD TFLOPS i.e. ~11 TFLOPS at 1900 Mhz stealth boost modes.