Not even remotely similar. RSU for a public company given at $100 per share can be sold at $100 per share (or more or less depending on the value of the share when it is sold). For public companies, that is basically cash. If you buy an option at 40% of current $100 value means you pay now $40 dollars for the option of buying the share at $100 in the future (Netflix has a 10 years horizon). That means that you start making money ($1, pre-tax!) when the stock reaches $141. If it does not happen, you have lost your $40.