If you use ZF2 ACL probably you have to do a few other things like put in place firewalls, load ACL configuration and setup rules etc.
I was quite happy with ZF1 ACL but a bit pain was to setup and keep up-to-date resources (in our case model/controller/action).
In ZF2 you should use routes - routeMatch or Controller match. I found quite useful ZfcRbac which is quite similar to RBAC but it does extra few bits.
It might be easier to start there.