My reluctant answer is I don’t know! I bought the Soul frame first, read up more and then decided I needed something a little more BFe (geddit? IGMC) and didn’t want to hurt the Soul. I then bought the PA frame, it arrived and looked truly beautiful and was built prior to the Soul arriving which I was going to try out of curiosity. The Cotic headbadge also erks me, but that’s just me.
I can tell you the Soul is astonishingly lightweight and has the finish you’d expect of a frame that expensive. That’s 853 for you! In my assumption/what I’ve read would suggest that the ride would be more gentle and a little more zingy. The burlier build of the PA is bound to feel stiffer as there’s nearly 1/2 a kg more steel there; which is visibly clear when comparing the stays/dropouts.
And yes, the Soul is orange too.