Right, but without the tire size and the gears considered, it is not accurate the way I see it. A 500 hp motor will not produce the same ET with 3:23's as a 500 horse with 4:11's right?
ET will be different, mph, not so much. There would be more difference in an eighth mile slip than would be in a quarter.
The more optimized your car is for drag racing, the more accurate the analytics of your timeslip will be.
And yes, a 700hp car with a stick and street tires will lose to a 500 hp car with a great converter, suspension, and slicks, every time.... or, almost every time....
(and a calculator would NOT tell the guy with 700 hp that he's GOT 700 hp.lol)