When users import Poser figures into 3dsmax (or any other higher end CG application for that matter), it's usually to take advantage of that application's more extensive, more developed rendering, lighting, modeling and animation features and third-party supplementary application support. Simply put, 3dsmax can do more because it's a professional-level application while Poser is entry-level. Of course, that doesn't mean you can't achieve professional results with Poser. Some users have more demanding needs that Poser isn't currently equipped to satisfy.