This seems to be a never-ending argument and it’s something I’ve touched upon before. Every few months the debate is kickstarted by something, in this case by lockouts being separated on Korean realms, and 25 man getting better loot than 10 man. People are wondering whether this is a trial run before it’s brought back to NA/EU servers. After all that was the system in place in Wrath of the Lich King.
What people forget is that their opinion is biased, and I’m no exception to that. Even people who’ve raided both formats equally will like one or the other better, and that will bias their opinion. It’s a complex subject because due to personal experience everyone is convinced that they are right. The problem with that is that everyone’s personal experience is different.