However, both their plots have both realism and internal consistency, a strong development of themes and are filled with believable characters, all written in decent prose that doesn't make you want to kick things.
Slow plot movement is nothing when these elements are present.

Brown, on the other hand, has two dimensional paper cutouts who race through a story that is completely devoid of realism (which is a staggering indictment, since his stories are set in our world, while Martin's and Jordan's are not). There are absolutely no themes, except perhaps that heroes are handsome and villains are not!