Since the Watts averages for the Powerlifting World Record totals is about 0.7899 as much as it the average for the Watts-3D correction, I have normalised the 3D curve by multiplying it by 80% (e.g., 0.8). -- For novice lifters, the differences between Watts and Watts-3D are even greater, since the bodyweight of the lifter (being factored in) comprises a larger percentage of the lift, and thus bumps up the Watts-3D totals even more - example:  451.14867, the average Watts value for lifters at the 2011 USAPL Nationals, compared with the respective average Watts-3D value of 631.55712, is only about 0.71 the value.

Since world-record holders have less difference between the Watts and Watts-3D values (as totals increase and bodyweight becomes less of a factor), I have rounded up the "normalisation" correction factor from 0.7899 to the nearest tenth, i.e., to 0.8.

Thus, the curve, shown in purple, fits in with both the Wilks and Watts values, and is comparable, but, I assert, more accurate.