DP lost a fullout to Ascendancy like 72 v 56 or something LOL. DP competed in HPC for like a week in 2010 and were awful before and close before most of the other clans. Honestly, DV was better than DP all time.
Epidemic is the only clan who made a run at MM in f2p. They had #1 and were pulling 120 for a bit. That is an accomplishment and half. Were not bad from 07 to their run either. Epidemic also slumped EOP in 2009 to 10 man pulls and wouldn't let them leave BH steps. Even more if you add in the NME accomplishments (essentially same clan).
IR was always the top MPC and had long stretches being better than TLP/EOP/CP during their lower points. Beat Carnage to win that MPC tournament in 2009 as the underdogs and smoked Zenith 100 v 100 in 2011. I think they lost less than 10 kids. Wouldn't say they were low either, I remember them having lots of addy pre-eoc. To be determined how re-opening will change their standing.