well in my opinion i dont think actual size matters, what i think matters is the appearance of size. jay doesnt SEEM very big, because he has no shape, no cuts, no vascularity, no taper, and big joints/bones.
BUT
even just PURE SIZE, wolf gets him. maybe not in th ABDOMEN, but wolf gots jay beat in pure shoulder, chest, arm and leg size. jay gots him on lower back and overall back thickness though.