Why do my neighbor and I happen to make the same numeric value per hour? I live in the US, so I drink a gallon of water a day. If I move to France, does that mean I should cut back to 1 liter per day?
Maybe that analogy will help.
Yeah, see my reply to your sibling comment. I was so distracted by the "same" that I didn't think about how prices of goods in other countries are often so high that the numbers do get close (i.e. a $100 widget will just happen to cost about £100 or 100€).