This is such a silly technical argument that I’ve seen twice now in this thread. Watts is just Joules/second. It’s entirely valid to wonder “what rate am I ‘consuming’ energy when I do X” rather than ask “how much energy did I ‘consume’ when I do X”
Making this correction is similar to telling someone that asking how fast they moved is wrong, and they should only ask how far they moved.
Blender can be CUDA accelerated which does give Nvidia an edge over AMD. In terms of video encoding, both nvidia and AMD cards are AV1 capable, so they are on par for video encoding; unless a program does not support AV1, then the proprietary nvidia video encoders are better.