Lets compare vitamin content per 100 calories of Kale vs Broccoli:
Raw Kale has 7.6 times more Vitamin A, 1.5 times more Thiamine, 2.9 times more Vitamin B2, 1.8 times more Vitamin B3 and 3.7 times more Vitamin K than Raw Broccoli. Both Raw Kale and Raw Broccoli have similar amounts of Vitamin B6, Vitamin C, Vitamin E and Folate per 100 kcal.
Comparing minerals per 100 calories for Kale vs Broccoli:
Raw Kale has 5.2 times more Calcium, 2.1 times more Iron, 1.5 times more Magnesium, 4.3 times more Manganese and 1.6 times more Sodium than Raw Broccoli. While Raw Broccoli contains 2.9 times more Selenium than Raw Kale. Both Raw Kale and Raw Broccoli have similar amounts of Copper, Phosphorus, Potassium and Zinc per 100 kcal.
Comparison of macro-nutrients per 100 calories:
Raw Kale has 3.9 times more Fat, 1.5 times more Fiber, 1.5 times more Saturated Fat, 5.8 times more Omega 3 and 5.8 times more Omega 6 than Raw Broccoli. While Raw Broccoli contains 1.5 times more Carbohydrate and 1.8 times more Sugars than Raw Kale. Both Raw Kale and Raw Broccoli have similar amounts of Energy, Protein and Water per 100 kcal.