That isn't true, it's based how many park days you have in a year. If you go for one extended stay, 8 or 9 days with a
DVC discount, then it hits break even. It's based totally on the number of days you are going and what other ticket media discounts you can get. ie If you are military, then the break even get to like 10-11 days.
Some other factors that can drop the "cost" of an AP.
If you eat a lot at table service, then with the TIW it might make that point come down.
If you buy something big at World of Disney (WoD) since there is an AP/Disney Visa Discount it can change your point.
If you stay on a cash reservation, at a time when there is a AP discount, that might make it cost effective.
And there is always my main reason to get one, convenance. We visit 3-4 times, for 3-4 days each, a year, I have family in Florida and we fly though MCO (as that is just as close/far as say JAX.) So we've been known to stop at Epcot on the way out of town for Fish and Chips. We would have NEVER done that if we where paying ~$90 for both of us to go into the park.
I will warn you about APs. Once you get one, with the renewal being ~$100 less...it's hard not to renew it.
johno