Both are 11 points and have the following stats:
A-wing : Interceptor
Speed - 5:5
Hull - 4:3
Anti-squad dice - 3:4
Anti-ship dice - 1black:1blue
Abilities - counter2:counter2, swarm
First, the extra attack die seems to be an overall better value than 1 extra hull. The interceptor's extra attack die does more potential damage every attack; the extra hull only allows the a-wing to take an extra damage once.
Second, the interceptor adds swarm, further bumping the damage potential up for the interceptor.
The only advantage of the awing is the black die over the blue, but without the bomber ability, I'm not sure that it's that much better against cap-ships.
Am I missing anything? What are other's thoughts?