I feel like some people forget that the project sekai models or cards aren't accurate to how they actually look.
For example in game Tsukasa looks cute and non beefy but in reality whilst Tsukasa is cute he is also charming and handsome in reality, Rui doesn't 'look as pretty as he actually is in reality', Rui in our perspective 'isn't pretty' due to the models and inaccurate official card artworks, however Rui is canonically the prettiest male in the game and in reality .( whereas Toya is the handsome one )
Rui in the pjsk characters POV's is good looking which is why the fan arts seem to be more accurate ( not including the beefy Rui and 'twink' Tsukasa ).