Uprisings are short to moderate length phased activities, similar to flashpoints, but with shorter distances between bosses, and add mobs with much lower health. This means you can usually complete an Uprising in about 30 minutes. Uprisings have been subject to the most extreme difficulty changes, in my opinion, with some updates making them so easy you can solo [MASTER] difficulty, and other updates where a balanced and experienced group is challenged in [STORY] difficulty. As of 7.3, uprisings are on the harder side, with a pair of players needed for [STORY] and a skilled group required for [MASTER].