Earlier quoted context omitted.
The stock options priced is based on the 409a valuation, not on what investors paid in the last round, so they might not be worthless.
what is a normal ratio between the two?
RSU's are stock given with the current valuation (eg. you get 10,000 shares, which are worth of $1M with the current valuation). If the company IPO with that valuation, you get ($1M - taxes). If they IPO with less or more, you get less or more.
Difference is that with options you actually have to exercise (buy the stock) with the given strike price.