I am not sure I agree - the weight shifting to the rear is happening weather the car "squats" or not. the weight transfer is a function of acceleration. To me it would seem that a stiffer shock in the back would actually force this weight transfer to increase the down force on the rear wheel which would improve traction where as a soft shock would actually soften the downward pressure on the rear wheel as it would be absorbed by the shock and not transferred to the ground. It seems to me that a softer shock causing the car to "squat" to the rear more is actually a sign that the shock is lessening the downward pressure put on the rear wheel.
As a side note I just did some investigative research and Top fuel Dragsters, which clearly would want the maximum traction, don't even have rear shocks or for that matter any suspension at all - if soft shocks helped weight transfer to the rear you would thing they would want this advantage
@edwardaneal We do not run slicks at very very low tire pressures that heated and become sticky as heck from a prior burn out.
We are not trying to sell you better shocks, and by all means if you feel the stock shocks will provide you better traction during a hard acceleration then please keep the original shocks. It's all about what you prefer, and everyone had their own opinion.