Lets compare vitamin content per 100 grams of Tomatoes vs Watermelon:
Raw Ripe Red Tomatoes have 1.5 times more Vitamin A, 3.3 times more Vitamin B3, 1.8 times more Vitamin B6, 5 times more Vitamin B9, 1.7 times more Vitamin C, 10.8 times more Vitamin E and 79 times more Vitamin K than Raw Watermelon.
While Raw Watermelon contains 2.5 times more Vitamin B5 than Raw Ripe Red Tomatoes.
Both Raw Ripe Red Tomatoes and Raw Watermelon have similar amounts of Vitamin B1 and Vitamin B2 per 100 g.
Both Raw Ripe Red Tomatoes as well as Raw Watermelon have insufficient amounts of Vitamin B12 and Vitamin D in 100 g.
Comparing minerals per 100 grams for Tomatoes vs Watermelon:
Raw Ripe Red Tomatoes have 1.4 times more Calcium, 1.4 times more Copper, 3 times more Manganese, 2.2 times more Phosphorus, 2.1 times more Potassium and 1.7 times more Zinc than Raw Watermelon.
Both Raw Ripe Red Tomatoes and Raw Watermelon have similar amounts of Iron, Magnesium and Water per 100 g.
Both Raw Ripe Red Tomatoes as well as Raw Watermelon have insufficient amounts of Fluoride and Selenium in 100 g.
Comparison of macro-nutrients per 100 grams:
Raw Ripe Red Tomatoes have 3 times more Fiber and 1.4 times more Protein than Raw Watermelon.
While Raw Watermelon contains 1.7 times more Energy, 1.9 times more Carbohydrate, 2.4 times more Sugars and 2.5 times more Fructose than Raw Ripe Red Tomatoes.
Both Raw Ripe Red Tomatoes as well as Raw Watermelon have insufficient amounts of Fat, Omega 3, Omega 6, Cholesterol, Glucose and Sucrose in 100 g.