Brew strength is always a factor but generally coffee has about twice the caffeine of tea. Excluding Jolt Cola which intentionally has 72 mg. Mountain Dew comes in a close third with 55 mg. The original formula as purchased by Pepsi in 1964, had caffeine in it.
Caffeine has a bitter taste.
The average person would die after drinking approximately 100 cups in one sitting. A single 12 oz. Both drinks are made primarily with espresso, steamed milk, and foamed milk. This results in the Cappucino having a stronger coffee flavor than its more milk-laden counterpart. Both do however contain the same amount of espresso and therefore the same amount of caffeine.