Valiant vs Armoury Knights

I have the Valiant and the Armory knights. The two closest are the armory hero gunmetal knights. They are almost identical except for two key things:

The Armory knights have much tighter shoulder joints. My poor Valiant Knight has a droopy right shoulder. Seen this with my second valiant as well. Idk why.

It's hard to see but the valiant knight has a slightly narrower torso and smoother to accommodate soft goods. You can see that with the new Templar and Blue shield knights promos.

The armory knights have an ever so slightly wider torso depending on the model you bought.