Late in the game here but I have been using that Adobe product and would like to add that they do have:
- the same Havok Physics engine
- Hardware Acceleration
- You can do Animation (quite a few ways but you can go to that other forum for more info)
Also since I am also on their Beta (what 3d nerd wouldn't be) there are quite a few more cool things on they way.
I have read/seen/used the products and the comparison's are usally not realistic because they are quite different products. As Medion explained already...