From a colonization standpoint hydrogen peroxide is better
Just to belabor an obvious point. If you pour hydrogen peroxide over a catalyst, you will get water as steam and pure oxygen as a waste product. Hydrogen peroxide is the perfect fuel for a Mars colony. Of course the high hydrogen measurements detected by Odyssey might not be hydrogen peroxide or less useful water. It might be hydrated rock, e.g. the concrete in your local sidewalk is hydrated rock. The "ice" detected at the lunar poles is either solar proton or more likely hydrated rock. For a space colony hydrogen peroxide is very good while pure water is merely good. Hydrated rock is bad.
Gary