AW is Andrew Wan, a former Panasonic employee who branched out to create his own "brand" of batteries. He allegedly has agreements with the major cell manufacturers to purchase first tier batteries from them. Not all batteries are created equal, so AW tests these batteries for quality. The best get chosen to be AW brand, and are re-wrapped as AW. Very respected brand. All cells are button top.
There are only a few battery manufacturers in the world who make their own "cells", including LG, Panasonic, Samsung, Sanyo, and Sony.
All the other brands on the market buy the second and third tier cells from those manufacturers and re-wrap them under their own brand, but these are "second and/or third tier cells" which did not meet the higher standards of the original manufacturer. So, in order to compete with the original manufacturers' batteries (first tier), these other companies feel obligated to publish specifications which are inflated to make them appear superior to those of the original manufacturer.