I'll have to chime in and agree with the feeling of being let down by this book, overall. It went in some nice directions but just never seemed to get to the intended destination correctly. Some of the weapon stats just didn't seem to jive with their intended purpose and the art was really just ... blah.
I liked the "sketch" art done for many of the vehicles (even though some of the sketches didn't match up with the actual description and stats of the vehicles), but the equipment and weapons were, largely, horrendous. The worst were the guns, all of which looked cartoonish and not at all functional. It's always nice to try for a new look with your tech, but if people end up looking at it and wondering why a designer would possibly make something so odd and obviously disfunctional, then the attempt has failed.