Overall, attack form. It's the best at doing it's intended job- Base 180 in both attacks and base 150 Speed, the thing rocks. Deoxys-D isnt bad but is outclassed by lugia/Giratina, with only moves like knock-off being its saving grace. Deoxys-S is OU and works as an average staller/sweeper, but there are pokes which do both roles better. Regular deoxys tries really hard to be Deoxys-A but just gets laughed at and sent to the corner :)