I have a few questions about turf wars (winning territories from gangs)

I haven't played in 13 years, so I'm a bit rusty.

I always like to bring my gang members. They are very good at spotting enemy gang members in cars and jacking them, so with that said:
You need a certain amount of kills to start a gang war. Do THEIR kills count?

Also, I had started a gang war in the nearest Ballas district (with a pizza place in the center) and the first wave never ended because one of the defending ballas member ran away. Saw him in my minimap, he ran away very far to a NW corner of the city. How am I suppoosed to deal with this? If I follow him, doesn't the invasion end if I leave the territory too long?

So I'm not 100% sure on your first question, but I don't believe their kills count. I think the three kills need to be done by you in a certain period of time.

As for your second question, this sucks when it happens but not a whole lot you can do. The game gives you a little bit of leeway but as you already mentioned, it will end it if you venture too far for too long. Sometimes there's just nothing you can do.

thanks

I learned the game does give you a LITTLE leeway, if only 1 enemy guy remains in a wave, you win that wave.

In my case there were probably 2 of them who fled but showing a only one dot.

Best bet when they run away is to use a sniper rifle. But of course that's not always viable.