I can't imagine a market survey yielding this name. In fact, I'd say it's proof that they could call it anything and people would still buy it. It's honestly hard for me to imagine any motivation for this name other than them laughing at how stupid American consumers are.
ETA: The first definition on Google for
Subjugator: A conqueror who defeats and enslaves
This led me to checking Webster and even pulling the Oxford off the shelf for the word Subjugate.
Webster:
1. To bring under control and governance as a subject
2. To make submissive: SUBDUE
Oxford:
To bring under domination or control, esp by conquest
Origin: the Latin subjugat, meaning "brought under a yoke"