At this point, I don't think there is any debate on if encl is the strongest girls league in SoCal and nationally.
For example, I could see choosing a Doug Swanson coached west coast ga team over many (most?) ecrl teams.
You hit on a key point here in my opinion. I think it's important to consider that you're getting 2nd team coaches with ECRL, which aren't always the greatest depending on the club. With GA your often looking at a club's top coaches, with names like Swanson at West Coast, Lalor at Albion and Walker at City for example. Not to mention more of a club's attention and resources. Coach, team, league, club, in that order.