Lets compare vitamin content per 100 grams of Onions vs Broccoli:
Raw Broccoli contains more Vitamin A, 1.5 times more Vitamin B1, 4.3 times more Vitamin B2, 5.5 times more Vitamin B3, 4.7 times more Vitamin B5, 1.5 times more Vitamin B6, 3.3 times more Vitamin B9, 12.1 times more Vitamin C, 39 times more Vitamin E and 254 times more Vitamin K than Raw Onions.
Both Raw Onions as well as Raw Broccoli have insufficient amounts of Vitamin B12 and Vitamin D in 100 g.
Comparing minerals per 100 grams for Onions vs Broccoli:
Raw Broccoli contains 2 times more Calcium, 1.3 times more Copper, 3.5 times more Iron, 2.1 times more Magnesium, 1.6 times more Manganese, 2.3 times more Phosphorus, 2.2 times more Potassium, 5 times more Selenium, 8.3 times more Sodium and 2.4 times more Zinc than Raw Onions.
Both Raw Onions and Raw Broccoli have similar amounts of Water per 100 g.
Comparison of macro-nutrients per 100 grams:
Raw Onions have 1.4 times more Carbohydrate, 2.5 times more Sugars and 1.9 times more Fructose than Raw Broccoli.
While Raw Broccoli contains 15.8 times more Omega 3, 1.5 times more Fiber and 2.6 times more Protein than Raw Onions.
Both Raw Onions and Raw Broccoli have similar amounts of Energy per 100 g.
Both Raw Onions as well as Raw Broccoli have insufficient amounts of Fat, Omega 6, Cholesterol, Glucose and Sucrose in 100 g.