With the current cap zone system it wouldn't work since another gang can cap it instantly after. It's about who captures the zones, not who controls them, who wins the fights, which is the whole point of the zone... to cap it then control it.
Surely for this to be some sort of competition it would have to be the gang with the longest time owning the cap or like on GTA where there is one big event for it.
Also, say gang 1 is winning with 3 points. If gang 2 captures all of the zones, it can only get a maximum of 3 points therefor being equal to gang 1 for that restart unless someone else captures it.
Aka, you can only get points if you are the first person to cap a zone during a restart or someone else caps a zone thus getting points. Therefor with that in mind, if there are two gangs fighting, they can only get equal amounts of points to each other or a 1 point lead.