What it says is that it allows for even lower placement for the ballast weight.
At these minuscule scales, i highly doubt it makes much, if any difference.
Now, if like the DEX410's rear Brass Skid Plate it actually places weight somewhere else on the car, and in the case of the 410 it makes a significant change. Taking what a professional sponsored driver says about products he is paid to promote… That's something people need to evaluate and decide on for themselves. A driver of Ty's caliber can take a competing product they've never driven and make it look like a cakewalk.