Sure there is a lot of difference in traction capability of a drag radial vs. a street radial. But in this case the Z06 apparently held pretty good with stock tires based on that 0-60 mph time. Most likely some real surface preparation. And if so the Z06s et isn't going to improve like the Dodge did with drag radials. Other factors will improve it's et of course as in da, driver experience and more.
Read my above reply about drag radials on the Dodge vs. none on the Z06.On drag radials which are not stock. Put drag radials on a Volkswagen bug, and it will produce better numbers than stock tires.