Review: WebWorks versus RoboHelp: a Comparison by One FrameUser 

I would say that the two products are more or less equal in the template creation category, with RH having some advantages. On the other hand, WWP is much more usable, customizable, and faster in the generation/compilation department. Given that template creation is done very seldom, and generation/compilation is done frequently, its advantages in this area make WWP the better product.

White, Leigh. Bright Path Solutions (2005). Articles>Reviews>Software>Adobe FrameMaker