^ This. I listed them as "How many mistake can the party can afford to cause teamwipes". E3S is by far one of the biggest snowball. Even failing punishing ray on E2S doesn't kill you. I have no idea what people find hard but the dps wall in E2S is non existent since its a full uptime fight. The "wall" comes from healers that doesn't heal and/or tank that doesn't optimize their dps.