So, two things,

which you can call AI if you want

This is from their official blog post, emphasis mine:

DLSS 5 is the GPT moment for graphics — blending hand-crafted rendering with generative AI to deliver a dramatic leap in visual realism while preserving the control artists need for creative expression

So, Nvidia themselves are the ones calling it AI

Second thing,

DLSS 5 is NOT replacing or altering the original graphical assets in the game with generated ones

I think they low key shot themselves in the foot with this particular comparison. The AI screenshot is actually from a frame (or however many frames) later in the scene. If you look closely you can see her mouth has actually opened slightly, and she appears to be in the process of rotating her head.

The end result is her lips are unquestionably larger in the AI image. Like if you bring the comparison slider directly to the middle, the bottom of her lip is lower while the top is higher. It has a pretty profound effect on the overall image.

Combine that with the hair highlights and makeup being so much more pronounced and the whole comparison is waaaay too similar to the “anti-feminism” filter thing that went viral in recent memory