I don't believe that is true.
It certainly *could* be that way if the guild leadership lets that happen.
I have only been in one merit based guild, and that was one I ran (<Dark Virtue> on Tribunal in EQ). Dark Virtue was hands down the best equipped guild within its tier on the server. Mobs drop gear for all classes, regardless which classes are needed to kill the mobs.
Just because a few key classes were needed to be sucessful vs a certain mob doesn't mean the guild was made up just of those classes. Recruitment kept close tabs on making sure we didn't have too many players of a certain class to not dillute the loot pool.
I am not sure how to explain it, I could write a book on it, honestly.
Merit systems can be abused, more easily so than DKP systems. That wasn't the case in Dark Virtue, we would often even give loot to guests on the raid simply because our members had better gear already, and we didn't allow twinks.
It was a matter of pride too, it was simply unacceptable to have someone wear the <Dark Virtue> guild tag, and that player be underequipped. It was a small guild, 53 members total, 40+ online every single night. We would raid 6 days a week, and usually would do an open raid on the 7th day. Life was good.
However, to this day there are endgame guilds in EQ that function on merit systems. Not many, granted, but there are some that did end-game content earlier than everyone else, and those are merit based guilds.
A merit based guild implies that guild members care about other guild members. I want the next guy to have good loot, because I want him or her to be there when he or she is needed. I want the player to be there when it is 4am and he or she has to go to work at 7am but we are still working on a strat on how to actually kill the mobs. I want that player to say "No, thanks for the offer though." when approached by a recruiter of a different guild.
Satisfaction builds loyalty, and loyalty is one of the very few true measurements one can size up toons in an MMO by.
On the fairness side: DKP is fair to most players most of the time, and that's good enough most of the time.
