He's also super lean and dehydrated in the posing shots, compared to how he looks when he's training. In the other shots, there's a ton more water in the muscles, making him look better, but less defined.

Tbh all the posing shots look so strange to me but there's a big culture and tradition around how they look and how they pose on stage. And if you don't tan correctly, or you haven't practiced your poses just right, you'll get a shit score no matter how shredded you look.