Street gangs are only organized if they are oriented towards making money. If they're not in the aim of making money then the gang is just a small group of friends, or in how I see the Bloods and the Crips which is a street fraternity... They're a bunch of crooks who are in the same clique and represent their neighborhood etc. but don't have an organizational structure.

The best way I understand a gang or a OC syndicate is to view it as a business, which crime basically is. And to see how powerful one is you look at what their gross revenue is.

The only area I see CN and street-gangs crossover with one another is in the drug trade. But then they are usually on different levels, the street-gangs are retails whilst the CN are distributers, supplying the gangs with drug packages and making a bigger profit.