Why don't we? is it a better graphics engine, sorry if its a dumb question, nor is it a slam at AH I'm just not very graphic engine savvy
I could be wrong but its my understanding that its a combination of substance (accurate flight modeling) and being able to run on the widest variety of computer systems. If the game had super uber graphics it would limit the amount of potential customers who could play to higher end machines only.
As it stands now the min requirements are
Minimum Requirements
CPU/Processor: 1.8 Ghz
OS: Win 2K/XP/Vista/Wn7
Memory: 512 MB
Video Card: DirectX 9.0 64MB
So you dont have to have uber machine to play. Just not a complete Dinosaur