Rubbish. With the Wilks Formula, as Robert readily admits, it now tends to favour the heavier guys. I would not use this formula in determing rankings for individual lifts. The only exception would be if each of the powerlifts contributed one third to a lifter's total.
In reality, most lifters can squat and deadlift more than they can bench press. To use this to rank individual lifts is simply incorrect and the heavier lift will be advantaged.
Although i have not analysised the data, i would strongly suspect that the heavier lifter's bench press, as a % of their total, would be higher then for a lighter lifter. To use the Wilks Formula to rank the Bench Press would further advantage the heavier lifter.