LCK format gives koreans an edge during worlds?
After watching both sets I, personally, feel that the format that the LCK uses (best of 3) gives the korean teams an edge during Worlds.
The LCK teams spend the entire season getting used to playing 2-3 games on stage a night and adjusting to immediate losses. While the practice does not necessarily give all the korean teams an insurmountable edge over the rest of the world, it does give them an edge.
The Bo3 adds a different depth to the game, do you play your absolute best champion that was unbanned or do you pick one you are extremely good with but just below your best champion? It could make a difference.
Even if this is completely off base, which it might be these are only my opinions, the fact that you have 3 qualifier seasons for a championship tournament and one of them uses a different format just seems to be odd, especially when the championship tournament uses the odd man out format rather than the one that the 2 LCS use.