In version 1.6, the Gaia CG model was preferred for many types of upscaling because it enhanced detail in a way that a user who had no seen the source material would not guess that it had been upscaled. e.g. The over smoothing of skin, though not ideal, looked like it could have been part of the source material. No one would have guessed that the video had been upscaled and that this was a result of upscaling.
Artemis HQ does a great job of upscaling content but the end result clearly looks upscaled. Gaia CG effectively “enhanced” video. The output of Artemis HQ doesn’t look enhanced. It looks upscaled.
The ideal model would produce video where a user who had not scene the source material would not guess that it was upscaled. Even if that means leaving in a certain amount of noise or undesirable effects. Without the Gaia CG model from 1.6, the value proposition of VEAI is gone. Content out of VEAI looks like it was visibly ran through a filter rather rather than looking like it was captured in that resolution.