Buddha -
Certain people within PSP don't "get it right" or get it wrong.
Ren is definitely a bigger part of the Chicago event than Dave, and Dave is more involved in LA than Renick. But the entire group has a say in the decisions at each event, including World Cup. Jerry may have made the original plans for the World Cup, but each member knows what's going on before hand and either axes a bad decision or agrees with it.
IMHO the reason that the Chicago event stood out this year is very understandable.
1 - it is held on the grounds of a field owned and operated by one of the principles of PSP. We are able to start preparing for the event months in advance.
2 - four teams that reffed, and ran the games have years and years of experience. They are also held very accountable PERSONALLY for their reffing duties by the owners of the team who also own PSP. I don't mean to bash Dynasty or Chuck. But the teams performance as refs is FAR behind their performance as players, and obviously they are not held accountable for their reffing by the owner of their team. In Chicago, that part of the equation was not an issue.
3 - I will side with you to an extent that after Vegas, the promoters put more hands on effort into making sure things went better, as did all employs of PSP. And again, based on the relationship the people have with PSP, the refs, runners, etc.
4 - The same could probably be said for the PRO refs.
All in all, I do not believe it was based even almost entirely on Ren being the assumed promoter of this particular event. I don't mean to take anything away from Renick by any means, I just don't think the perception is the reality.
Easier place to run an event. The "hired" staff running the games has a higher than normal interest in doing a good job, and a bit more effort.
PSP could give the bit more effort at each event. But the other two aren't as easy to maintain under the currect situation.
I'm not making excuses. I'm just giving my perspective.