Mules are slightly smaller than their horse parent, and when they grow they share traits of both a donkey (the long ears), and the horse (color, tail, etc.). A Mule in the grass.
For example, a 2014 Ford F-150 is considered a half ton truck but most variants can carry a lot more than 1,000 pounds in the bed. Since these terms are probably not going away any time soon, it's best just to think of them as smaller, mediumest, and more than medium.. (Pause for laughter).
Modern trucks have a higher average, with most of them weighing between 5,000 and 9,900 pounds according to their make and model. A three-quarter-ton truck can carry between 8,500 to 9,900 pounds, while a one-ton truck can likely weigh in over 9,900 pounds.