Now, now...nobody is questoning the fact that Ed Coan is/was a fabulous deadlifter.
However, THE greatest deadlifter of ALL-TIME pound-for-pound was Bob Peoples, who officially pulled 725+ lbs. at a bwt. of only 189 lbs. way back in 1949...TOTALLY DRUG-FREE and wearing ONLY a 4-in. wide single-ply lifting belt (see photo below)!!!
To try and compare Bob Peoples with Ed Coan is like trying to compare apples with oranges!
To try and level the playing-field, stuff Bob Peoples with a bunch of anabolic-andogenic drugs (adds about a 33% increase in poundage) and ALSO add a multi-ply deadlift suit and thick/wide multi-ply lifting belt (add another 50-100 lbs.) like Ed Coan's UNFAIR advantages, and Bob Peoples would DEFINITELY have deadlifted more than 901 lbs., STILL while weighing only 189 lbs.
For example, 725 lbs. + (725 lbs. times 33%) + [add another 50 lbs. for a mulit-ply deadlift suit (at least!)] = 1014 lbs. for Bob Peoples (VERY conservatively!)...which would be THE greatest deadlift of all-time REGARDLESS OF BWT. ...even exceeding Andy Bolton's recent fabulous 1003 lbs.!!