Since we're pulling rank, I worked in Finance, specifically the Investment Banking and the Funds industries, some of which being very well know names (Fidelity, Deutsche Bank, even Lehman Brothers back when they still existed), always in the EMEA divisions which, unlike our US colleagues, deal with cross-currency trades all day every day (because EMEA actually means Europe Middle-East and Asia, so it's a lot more than just trades on USD priced assets, for USD books, settled in USD).
So I'm quite familiar with exactly what cross-currency exchange rates mean, and it's painfully obvious that you have absolutelly no clue what you're talking about when you're quoting a cross-currency exchange rate by itself and claiming that alone is proof of comparitive advantage.