Konachan has a 1 600 × 900 version, but Dan/Gelbooru has a less aliased 1 920 × 1 080 version. Is this one an upscaled version?

This is an interesting situtaion. On the artist's pixiv, it's 1600x900, HOWEVER in the description, he links a google drive download of an 1920x1080 version. Idk whether THIS post is upscaled or not, but the fact that it is in PNG format is fishy, since the 1920x1080 one the artist linked in the description is a native jpg.

Edit: seems like ram's eye expression is alternate and this one. I'll post the google one and make this the child, but not delete this because it's like, an alternate version.