This just proves that everyone has different experiences in the game!
I have played against AP a few times early on in a season. He is DOMINATING when he isn't injured. Which, obviously, is almost never. But anyway, statistically he is amazing as well. 80s str, fast, elusive, powerful. He is by far the best ratings back in the game (maybe next to boar... who is aslo injury prone).
Either way, I think the game is a little too harsh with his injuries. I agree he is injury prone in real life, but he still lead the league in rushing and carried the ball over 300 times. That does not translate to a 45 injury rating. Even if you are basing that rating off of his rookie year. I think 70 would be a good rating for him. With a much higher toughness rating as well. He recovers quickly.
Should he have a much less carry rating? Of course. But AP really is a spectacular back and it would be fun to see him on the field more in this game. Oh well, there is always some awesome backs to draft!