It's hard to tell because ND is wearing a shirt, but:
Back: Conker
Arms: ND
Chest: undetermined
Shoulders: Conker
Legs: undetermined
my arms are not great for my weight but they are way bigger than his. his are 15 inches tops. that's why he doesn't want to look at the comparison from the same angle tricep side. and why he keeps cropping the inside of my left arm and putting against the pic of his on the tricep side.
BB is all about illusions anyway. but i dwarf him everywhere except possibly calves but then my missus also has me on calves too
i have a good 4" + on him on quads too.
i'm not huge by any stretch but standing next to him i would dwarf him. he's an 11 1/2 - 12 stone dude.