Point of the whole thing is that having more cds, stacking, guaranteed buffs can't be used as an argument when 10 vs 25 healing and dps requirements are discussed. There's no less responsibility per raider on both sizes. But when you scale things to 25 people...logistic, teamplay, organization, chances of random deaths, mistakes...it just get's so much more complex. And that's just talking about raid it self. Managing guild, recruitment and all other non raid logistical issues are just off the chart compared.