>>18739431080p is just a term referring to videos and shit, some anon will occasionally get autistic about how it doesn't technically mean the same thing as 1920x1080. Because you provided a portrait image and asked for it in 1080 the anon assumed you were using it for a phone and left it portrait.
Here's the other one
https://a.uguu.se/sfejvu_wallpaper2.png 