I tried it, WBSIII that is.
There is a ton of great stuff there AH could use (buff gun shake, nice cockpits, bomber graphics all around, planeset, excellent offline mode practice) lotsa stuff which is as good just diffrent than AH, and with time flying it might find even more good stuff. I was really surprised.
Thing is, it all feels like the airplanes are stuck in mud and my joystick inputs show up 3 seconds later. Plus i can't fly free for 2 weeks to check it out? That's a whoopee shame.