Yes, it's shopped. Asian women with this shape do exist, but they are very rare. Sharon Lee is a French speaking, Vietnamese porn star... she is the closest thing I've seen to having these dimensions.
Ah, close, but no cigar. It's the genetics. Sharon has a atypical Asian backside. There would have to be an admixture. The heavier (thick) Asian women tend to have more curves but still have the same backside shape. There are a few with fuller lower glute, but still have the same glute curve from the side.
Photoshopping to have bodies that they wouldn't have is something that is all too common. You'll see the Latinas photoshopped to give an unrealistically exaggerated curves, which is usually following the body template that Latinas of Afro decent have. And you'll see the Asians photoshopped to mimic that, kinda like an insecurity thing with the product. Gives an unrealistic expectation, kinda like how Coco and Kim Kardashian's backsides are shopped (Nick from Slickforce is one guy that Kim uses) to be smooth as silk, and when you continually see that, you are surprised when you see the unshopped pics.