Talking about two different things. Yes, two cars with the exact dial in time of 12.50, and one sleeps at the light a full second and the other cuts a perfect light, the one with a perfect light will not only get to the 60 ft faster but to the finish faster by a full second. But both cars can still go 12.50 ET with a 1.7 60 ft time. Reaction time is critical to winning races but has NO barring on what the car will run in the 60 ft, 1/8 mile or 1/4 mile.
