While it may be overly knowing in its execution, it’s clearly a labour of love on the part of Yasuchika Nagaoka and crew, and that shows through. And what it loves is giant robots and busty women. And busty giant robots.
It has its tongue in its cheek, most obviously in the taking the obvious sexual metaphor of combining robots and hitting you over the head with it, but at the same time it’s not mocking super robots. More an OTT homage than a spoof of the genre. And it may be the only show that had had to put out a dojin in order to get funds to finish the story.