Maybe you had 18 active people within 2 bishop and 2 ee, but you had also like 5 rechargers in the back for ress and recharge.
Also we played a lot of times party vs party with Veteran CP and i don't remember our team in the ground even 1 time.
P.S I will never forget that 9v9 out of aden castle, when you was using the rechargers for mana and ress.