Among all the berries, this is perhaps the most confusing. Why? Because what is a gooseberry in America is different than the Indian version and the Chinese version (the latter of which is actually what we call kiwi fruit). There are other varieties, too.How much antioxidants they have vary dramatically, so it's important to know which species you're evaluating. If you're referencing the version common in North America, Ribes uva-crispa, its ORAC value is reflected above. Indian gooseberries have an ORAC value that is a stagger 78x higher than the American version.
ORAC Source
USDA Database for the Oxygen Radical Absorbance Capacity (ORAC) of Selected Foods, Release 2 - Prepared by Nutrient Data Laboratory, Beltsville Human Nutrition Research Center (BHNRC), Agricultural Research Service (ARS), U.S. Department of Agriculture (USDA) - May 2010