Derek would win if he was a little more dense and dry. He has a slight asemetry in his shoulders in the hands clasped most muscular. But his front double and back double are probably the best, save maybe Andrew - but it's hard to compare Andrew because he twists his body in the front double and I haven't seen pics of his back double.
Samson just has that pure concrete "old man muscle" almost like Ronnie had back in 2005. Even though he could be a tad dryer in the chest and shoulders, he still looks like granite. Very complete head to toe, massive, great symmetry. Might need to suck in his abs a little in the ab/thigh, as it is the lower abs protrude a little.
Hadi is... Just relentless. Dude is a different animal. You could argue he is even more consistent in being even more shredded than "the blade" Dexter Jackson was. Every single time he steps on stage he is absolutely ripped to the bone, just nasty. And heaping mounds of muscle everywhere, with a waist that might be a little blocky but is always flat like iron and sporting, not a 6 pack, but a 30 pack
Brandon looks massive and his front double is beautiful. Good for him that he competed