good score helps,
but the rounds lasting till the end make crazy match bonuses , and over bonus til the end , ive tried them all. demolition is the best to lv up in. Ground WAR is the worst . its only good to get a nice k/d ratio.
just stick to demolition and youll prestige hella quick. and put these as you ks. predetor/ harrier / pavelow. dont bother useing ac130 or chopper gunner , as the isnt very many people to blow away.