You can not compare game engines and development software. Vue Maya Lightwave and the rest, are creation programs. When you do a softbody simulation in those programs the software ahs to modify the base scene file it's self. Not just move or paint objects that are already defined. It is creating and modifying the environment, not just playing back and environment. It's like comparing apples and oranges. Just ask one of those systems to prepare a file that can exported for print and see just how well it responds. Even in this day and age people forget that the graphics engine has Nothing to do with render times. Rendering is done by the cpu, and since #D creation apps have to do a whole lot more than just display already created, textured and lit objects they will never be as fast as HW based graphics cards. #D creation apps do everything in SW. THen send the final result to the display card. While it would be possible to have a HW intensive 3D creation package it would be single task oriented and unflexible as HW is not nearly as modifyable or flexible as a SW based system.