Its not a mistake, they actually have a point.
(And the 16m are also easier due to the fact you can just steamroll anything with 3 sage/sorc healers and their op aoe healing)
I wanna see those guilds who are able to run 8m hard modes and not be able to run 16m easy modes (provided they have enough players for it), because like I said before, just stack sages/sorcs... which shouldnt be a problem, theres a buttload of them, cause theyre the fotm class atm