Both cruciferous veggies contain similar nutrition profiles. They are low in calories and have ample amounts of health benefitting vitamins and minerals. Comparatively speaking, broccoli does have higher amounts of Vitamin A, Vitamin C, Vitamin K, and magnesium. Additionally, if you suffer from high uric acid levels, broccoli is a better choice than cauliflower. That said, cauliflower has a wide range of health benefits too. The best way to get as many nutrients as possible is to include both vegetables in your diet.