Amazon also has this trick where they quote your total compensation with the built in assumption that $AMZN will appreciate by 15% per year.
When I went through the process, it was pretty confusing to understand but the gist is that they try to hit a total compensation of whatever your target is. And when they quote the total compensation of your salary 3 or 4 years in, they assume that the stock has appreciated by 15% per year. So 15% of your potential gains (compounding per year) of getting RSUs and exposure to Amazon stock is removed.