Jeff, if I recall correctly, Killbots was first released with that title and poster, and bombed. The production company decided to re-release it under a different title (Chopping Mall), with a different ad campaign, both of which emphasized the more popular (at the time) slasher/horror angle instead of the sic-fi elements of the story, and the movie became a minor hit.
And yes, that is the French 47X63 for Toxic Avenger, I remember seeing it all over Paris when I was a kid in the 1980s. Love those silly tag lines (which translate as "More dangerous than the IRS" and "More efficient than Mr. Clean"!)...