I think you cannot evaluate the boards with the results in the PWA. The rider makes 99% of the result, and the remaining 1% depends not only of the board, but of the rig and the fin too.
There is no better brand I think, but different options. Some are innovative, other do not take too much risk. Some produces very light and fragile, other reliable and heavier. There are design (it is very important!) for all the tastes. After, each brand looks to have their own speciality, fanatic and JP are famous for their freewave and wave design, Starboard has more reputation for lightwind machines like big slalom and formula.