Geonosians

Power is a measure of character investment. A measure of gear, credits, ability mats that have been used to upgrade a character. It is a very crude way of measuring relative usefulness, but tells you nothing about the things that actually bring victory such as proper team composition, character synergy, character abilities, strategy, and mod stats. This is why Nest can solo or time-out so many teams. This is why people have different mod sets for PVP and for raids, this is why people gear particular key characters on teams higher than others. Some teams are specifically designed to beat other teams, like JKR vs. Trays, DR vs JKR, etc. You need to learn the strategies, learn to mod, learn what characters to focus on, and what teams work well together. My top 5 characters by power are CLS, DR, Nest, GBA, KRU. But just because they have high power doesn't mean I will be putting them on a team together, especially in GAC because they all come from other different teams, and any of the top meta teams would best it if I put it on defense.