AI has a hard time running 223, just FYI.
Other than that, I say AI all day long. They are much more durable, barrels are easy to find, they shoot damn well, and swapping the barrels is as easy as turning a screwdriver.
You don't see AI in PRS because prs has become very gamified. The AI rifles, with the exception of the new AT-X all have a pretty high barrel over bottom of stock. That is, they sit high on barricades, etc. Not as good for the PRS game, but they can absolutely be used.
What they have over PRS guns is absolute bombproofness. There are Irish AI AW rifles still serving in their military today that were made way back in the 90s. They are still using the original barrels, even. The Lothar Walther LW50 steel they used back then is very hard and makes good barrels.
Jacob Bynum of Rifles Only down there in Kingsville, TX has an AW with over 26 barrels on it. As in, he has shot out that many barrels on one action. That is well over 200K rounds through one gun and it still keeps going.
They are the best general purpose precision small arm ever made.