In DaVinci Resolve 18.6, Blackmagic is claiming up to a 4x improvement in Neural Engine performance for AMD GPUs, and a 2x improvement for NVIDIA. Is this a true claim, or a matter of cherry-picked results that won’t impact most users?

In DaVinci Resolve 18.6, Blackmagic is claiming up to a 4x improvement in Neural Engine performance for AMD GPUs, and a 2x improvement for NVIDIA. Is this a true claim, or a matter of cherry-picked results that won’t impact most users?
The Intel Arc Alchemist A770 and A750 launched 11 months ago. How have the Intel Arc A770 and A750 improved for content creation applications since then?