I haven't seen this comparison made yet, In case you don;t know about PETMAN , PETMAN is an anthropomorphic robot for testing chemical protection
clothing used by the US Army. Unlike previous suit testers, which had to be supported mechanically and had a limited repertoire of motion, PETMAN will
balance itself and move freely; walking, crawling and doing a variety of suit-stressing calisthenics d...uring exposure to chemical warfare agents.
PETMAN will also simulate human physiology within the protective suit by controlling temperature, humidity and sweating when necessary, all to provide
realistic test conditions.
PETMAN Video
While your at it, Look at the AT-ST.... AT-ST Picture
Freaky, Not mind blowing. But I found it interesting and thought you might to.
Thanks for your time & sorry if you feel I wasted it.