Wow, look at his new robot monster super scary thing from Urban Mammoth!
I would run a campaign or maybe just a one off game where giant alien robots like that invaded some world and where a squad of soldiers had to fight their way off world. Yeah, that would be cool. I can just imagine those things stomping through the ruins of a massive city, a city that they ruined!
The game designers themselves know these values are not realistic and they do not intend them to replace or invalidate the fluff. So let's get on with our lives and not fixate over the cosmic ramifications of game mechanics which we already know are streamlined for larger forces at the expense of detail.