It's mostly about the feel. I haven't played a more recent S2, but I hated the volume controls on the 2014 model I had. The pots were not smooth turning and got scratchy in a very short time. I love the feel of the Core pots and the treble bleed cap will keep the tone from getting muffled as you turn down. Not sure if S2 models usually have that or not.
In my opinion, the push/pull pots and tone capacitors they use are great and I see no reason to swap those.