For anyone interested in some background history, I believe this was discussion from when the Pilot Sport AS4 was released back around 2022.
https://www.zr1.net/forum/showthread.php?t=33923
I too would be curious how the AS4s compare to the Goodyear Eagle F1 GS-D3. The AS4 seems like the most recent and modern tire released at OEM sizes (315 rear width). As time goes on it seems this size will be increasingly rare.