I'm srry if you think these look the same then you need to get your eyes checked instead of blindly white knighting
the new sprite looks a lot more consistent with how amicus looks in the illustrations in adastra, as opposed to his sprites. This is probably a matter of them being quite different in age, and haps getting better at drawing him over the course of adastra, which is to say that the one on the right is probably how amicus was always intended to look