No one uses the antiquated (1994) US government crash test ratings other than US car mfgs who designed them.

The IIHS crash tests are the consumer standards (see Consumer Reports for more information).

Prius does much better (Good) than the Escape (Acceptable, head injuries, pelvic injuries) in the crash test ratings.

Additionally the Prius has stability control which, due to proven safety benefits, all US cars will have by 2010. Escape being a high center of gravity vehicle, the roll over protection offered by stability control is a key factor in making it a less safe vehicle to drive.

Since cargo volume was one of the original concerns, the person might want to look at the Toyota Highlander Hybrid which has more cargo, better crash test rating and same mileage as the Escape but costs a lot more.

Sounds like you are defending your purchase vs. analyzing factors in buying new car.