The DX10 should have really been the definitive T2 Arnold. Unfortunately the sculpt is a little off. It really should have looked comparable to this one minus the damage. Hopefully Hot Toys will redo it later down the road.
Do you think they made a completely new sculpt for the DX13? It is the DX10 with battle damage. The DX10 looks softer because all of the photos are of the final, mass produced piece and the DX13 looks nicer and more detailed because you are looking at pics of the prototype.
Maybe I should just put this in my sig, I'm starting to feel like a broken record.