What is the different between Footjoy "Pro/ SL" and "FJ ARC SL" shoes?

Is Footjoy sizing near your normal shoe size?

I have found their sizing spot on I wear nothing else now.

If you are thinking of these go to a pro shop who has a brannock device to measure your feet.
You can then design your own.
I do this as I have different size feet , right is 9 wide left is 10 extra wide.
I normally get 9.5 wide and they fit ok until I used this service from footjoy myjoys.
I have always struggled with shoes until I had mine made by footjoy .
I can honestly say they are the best shoes I have ever owned fit me properly.
I have had contours , pro sl and icons made for me.

I only bought the arc sl as they were on offer in USA.
They are very nice but would choose pro sl if same price.

Only down side to this is you pay rrp but take my word for it “ it’s worth the extra”.