[Ushanewnewba]

Indeed it does help.

If you are a gang very interested in gang wars, I would suggest getting your hideout to 2k hp at least, with a few other upgrades, then go all out on GCB.

If you are a gang not really interested in gang wars and just wanna hang out and pvp just to better your characters, then I would suggest only doing GCB.

Worst case scenario even if you have +2GCB you may not be taking people 10 levels higher than you, but rather when you attack those guys that are closer to your power level, you will find yourself spending less on health bars.. It's pretty cheap to get to +3GCB with minimal effort or you and your gangs part.

Hope that helps some of you.