The AP1 has a notoriously brittle differential. It’s fine for spirited driving, but not at all built for clutch-drops and general abuse.
When it came to the AP2, Honda addressed this - not by strengthening the diff, no. Instead, they put in an extremely heavy flywheel, and a CDV - clutch delay valve.
If you’ve ever driven an AP2 hard, you’ll notice it right away. The car acts like the clutch is slipping all the time because the entire drivetrain is neutered.
This obviously won’t be simulated in a video game - so by numbers alone the AP2 will be slightly faster. But if I had to pick which one of these is the better racing machine, AP1 all the way.