i dont have the gtech now, ive now got the racelogic performance box.
it datalogs constant so i can see everything.
with 0 - 60 mph above 4 seconds my 60 fts are always above 2 seconds, but in the 3 seconds area always below 2 seconds.
il go have a look what my 60ft was on the 12 second run.

heres speed and time



and speed and distance



my 60 ft time was about 2.7 seconds at 39 mph lol
but as said i wasnt even trying to launch it hard it was more of a 30 - 130 comparison, i am loveing the racelogic box its so much better than the gtech as it constant datalogs via gps.