people don't play as good as they do when it really matters, i've seen that in so many guilds.
doing dragon soul no nerf how clean our 0% kills we're vs the 35% debuff, sloppy unfocused kills, people just don't put the same effort into farm be it top guilds middle or the low end, the first kill means everything, the 10th means very little, if anything at all, and the 30th is like who gives a shit.