I can tell you this: In 9 matches I didn't face the same list twice. So the meta can't be that bad. The closest I faced to similar was a couple tie swarms, but they had different tweaks (obsidians, backstabbers, PTL's, etc.). I believe that they measure the entire balance of the game against the tie swarm when testing, because it's ALWAYS going to be there and be competitive.
Honestly, I think that this wave was the most frustrating to people because of one card: C3P0. The phantom came out and everyone went bonkers about how unbeatable it was, so the whole world went to beating it. How did they do it? High PS and one card: C3P0. And it's not just the card, it's the fact that you can only get it through purchasing a gigantic F'ing ship for a boatload of cash that you'll never fly (I've seriously never seen an epic match, but know 8 guys with the ships).
I saw a lot of variation. Han was just a good ship that had a wide margin for error this worlds. Combine that with people that don't make mistakes (Paul) and you've got a TOUGH build, but I'd be willing to say that his build with the R2D2 crew was the ONLY one like that out of 250 worlds players, which has to say something on variance.
R2D2 has always been an underdog card. Jeff B. really showed what it could do at gencon this year and Paul definitely adapted it. Lol unfortunately since Paul won now everyone is really gonna be seeing it and most likely putting it into there builds. This means that the falcon can now shrug off 3 damage a turn or more with a c3p0 guess of 1 or 2. So this means we have to beable to deal atleast 4 damage a turn to do 1 damage to the falcon. R2d2 is a beast of a card!