Why wouldn't you expect highly skilled workers to perform about the same as highly skilled local workers?
Your reply has nothing to do with potatolicious's point, which is that there are companies like Google which don't hire foreign workers for the sake of underpaying them. That's not the business model there.
What you're talking about is different. If increased supply of high-quality workers pushes wages downward a bit, that's not an act created by Google or other individual employers -- that's a macro effect you get even when they're paying any given foreign worker the same that they'd pay a local worker.
Your reply has nothing to do with potatolicious's point, which is that there are companies like Google which don't hire foreign workers for the sake of underpaying them. That's not the business model there.
What you're talking about is different. If increased supply of high-quality workers pushes wages downward a bit, that's not an act created by Google or other individual employers -- that's a macro effect you get even when they're paying any given foreign worker the same that they'd pay a local worker.