There are several variations of this fruit and the yellow guava (Psidium guajava) goes by different names, including the common or lemon guava. This version is native throughout Central America, the Caribbean, and South America.
If you compare a yellow guava vs. pink guava, which offers you more nutrition? Their sugar content, calories, carbohydrates, fiber content, mineral and vitamin content is more or less the same. However there is a different in how much total antioxidants are found in each. Yellow guava have an ORAC value which is about 25% less than the pink/red guava.
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