Hello again !
GW reveled the numbers of battlegrounds won by the Order, Chaos, Destruction, Death.
One battleground is one store and that make around 1000 store (don't forget the 100 contested).
Battleground control ratio by alliance :
Order : 415 of 1000 ratio 41.5%
Chaos 256 of 1000 ratio 25.6%
destruction 136 of 1000 ratio 13.6%
Death 108 of 1000 ratio 10.8%
Sound like total win by the order !!