Hah! I am taller than Fuji and weigh less than Fuji, how does that even make sense? I would've guessed 155.
As an outside observer, his upper frame is way bigger than yours. Bigger to the point the top is disproportionate to the bottom which, squat jokes aside, is relatively rare. Your top and bottom are between proportionate to mildly under weight on the top. I'm not trying to burn either one of you, but a body's work is never done.
Because he's still a teen. Many guys that first go to thee gym and do the "bro" workout (chest, arms). I actually think it's a good start for anyone going because the changes can be drastic, which will motivate one later to hit their weak spots. And shellshock, I do think the double layer focuses attention on your hips. Especially the white on black. Not implying anything by that.