Statistically I knew it was bound to happen one day. But we are all so used to thinking of pickup groups as being us playing well and some other players underperforming and barely pulling their weight that we don't think that one day it might be the other way round. Last night I couldn't find a guild group for random heroics, it being raid night, so I just joined a random pickup group for heroics with my priest as a healer. First surprise was the random being the Pit of Saron, the second of the new 5-man dungeons, a rather tought place. The second surprise was the people I was randomly grouped with: All wearing full Ulduar/ToC epics, the warrior having 45k health, and the dps all doing over 4k dps.
I was determined to do my best, but I did have my difficulties to keep up. The saronite rocks the first boss throws cause line-of-sight problems to healing, and I was struggling to keep everyone alive. And then I died. Fortunately I'm actually a better healer dead than alive, with the holy priest ability to transform into an angel after death and keep on healing for some seconds without even needing mana. I threw a couple of longer lasting spells like Guardian Spirit and Prayer of Mending on the tank before that ran out. And miraculously the combat ended with everyone dead except the tank, and the boss down.
That encounter set the tone for the rest of the dungeon. I managed to die in every single boss fight, and in the hard fight up the ramp after the second boss. But the tank always survived, and we always beat the boss on the first try. So I ended the dungeon run with 2 Emblems of Frost, 3 Emblems of Triumph, and 2 iLevel 232 epics which were an upgrade for me. And all that reward for taking a dirt nap at every hard fight. Hugely embarrassing! And not a word of criticism from the others, except that the tank had his perky pug out to indicate he was kind of used to that.
So let that be a lesson to you: Don't complain about the other people in the PuG underperforming, because one day you'll be grouped with 4 people performing better than you.