This may sound like an odd question, but are Struts (c#) similar to Objects in AS3 ?
What are the limitations to Game Development in AS3 / Flash Player 10 ? Would it be possible to create a game similar to Torcs using AS3 and something like Away3D or Papervision 3D ?
I believe that with PaperVision, you could create any game you like. However, it is a highly evolving framework. In the past, we have created many visually intensive 3D spaces with little effort. I would say that you have to keep in mind that memory management is critical to development in the environment.