I would say "projected sales" is just that ...projected.
It would not be in their own best interests to paint too rosy a picture here. They already have the cash in the bank for one thing and the figures they have used are easily verified bu the US's own Health Dept. statistics. Remember they are only quoting up to 12.5% of the available market. Under promise and over deliver sounds like a good theme to me and, what happens to their figures if they get say, 17.5% of the available market?