The pro sets have a wider notch in the rear sight also
I had the regular operator set on my fav G23 and loved it.
Good for carry and awesome for target.
I changed the front to a Pro-Glo which is wider than the standard operator and while easier to pick up and stay locked on the front sight I'm not as good at long distance targets which happens to be 90% of my shooting.
Everything is a compromise
As a whole I love Ameriglo sights and they have a stunning amount of choices in sights
I'm gonna have to set up one of my Glocks with a dedicated set of target sights now that I've seen what a narrow front sight and plenty of space around it can do for me.