[Bianculli]

First of all in this case, this is an easy call. With the blinds, your raise, and the villain's reraise you only need to call about $2.80 for a chance to win a $4.70 pot, so you are getting about 1.7-1 on your call and are only about a 1.1-1 dog to an underpair. You are closing the action on this hand also. When you add the fact that villain could have a worse ace or even something like K-Qs, this is an easy call because you are actually much better than 1.1-1 dog against villain's range. You are not taking the worst of it.

The decision to call an all-in with AK comes down to the pot odds and villain's range based on their tendencies and current mood (i.e., are they on tilt after losing a big hand, etc.).