So, you think we should just release *anything* simply to have a release out there? Hope you like games with no infantry units.... seriously, the reason we haven't released it is because we don't have enough assets ingame TO release it. It would be like releasing an FPS with no guns...
As for not seeing how they would be different... I think all the current and previous testers would agree AR is very different to APB... it has veterancy, weakpoints and deployment for a start and those are only a few of the major differences.