>>5931295I don't know, I think most of the proportions look about right.
I think it's just the fact that the joints are broken up that it ends up looking less compact but if you compare it even to the HT figure the overall width and thickness of the armor pieces look fairly spot-on. Beyond that, I'd say the only notable thing is that the shoulder armor should cover more of his shoulder (though this was probably done to give more leeway for posing) and I'll give you that the crotch piece looks a little wider than it should be.