The role of "as"

Unquestionably the end-of-the-world as begot by a lethal, unstoppably infectious man-made disease cataclysmic sci-fi thriller to end 'em all, an unmitigated take-no-prisoners-and-don't-pull-any-punches corker which at the time was the single most costly (a hefty $17 million), audacious and prodigiously ambitious shoot-the-fireworks-straight-to-the-moon-and-back film production made in Japanese motion picture history, a grand scale endeavor which took two whole years and the participation of five entire continents to get made. Naturally, and somewhat ironically considering the all-star international name cast, this hell-broke-for-humanity merciless skull-popper received short shift in the United States, forgoing a theatrical run for the undeserved direct to cable and video route. To make matters worse, this two and a half hour epic was badly butchered by American distributors, who cut roughly 45 minutes out of the film.

Here, I'd like to know whether "as" is used as a preposition and "begot" is an object of "as."

Thank you in advance for your help.