I'm not saying there's a ton of evidence in favor of what I'm saying, I'm just saying it's a possible explanation.
Even though it's entirely hypocritical of me (I'm somewhat okay with Chinese companies paying lower wages as long as they're above the average Chinese income), I still can't let go of how "it's okay, he lives in India so he doesn't need that much money" sounds like "it's okay, she's black, she doesn't need that much money and wouldn't know what to do with it anyway" or "it's okay, he's Asian, I bet he's frugal enough not to need the same wage as our white employees".
But this guy was being relocated to the US. What wage is appropriate in India has no relevance to what is appropriate where he was being relocated.