I don't know about that but Autodesk is generally for high-end professional companies or professions. In the modelling world, there are two types of models: Low-poly and High-poly. Low-poly means the model has less polys, therefore less of everything including vertices, details and fluid animation. High-poly is exactly the opposite. Wacraft III only uses very low poly models, as the game is unable to support models of such high detail.
Autodesk costs thousands, meaning it's meant for professionals, companies and industries. It's totally unessesary to purchase software such as Maya to develop models for Warcraft. There are some considerably good and cheap software out there that is used more commonly among the modelling community such as Milkshape and Blender.
Save your money, your time and yourself.