the one advantage of narrow tires is in the corners, where there's less sidewall so there's less material that can flex unwantedly.
wider tires will do that, but it's mainly the rim width that causes the unwanted flexing.
Not that you'd notice this with a 25mm to 23mm transition.
It's a bit more noticeable when you use narrow rims with wide tires in the range of 32mm or higher.
Actually the give of a wider rim/wider tire seems to maintain much better contact in the corners for me, especially on roads that aren't perfectly flat (i.e., rain gutter in the intersection).