No, I have not done a comparison. In your question above, will the car have street tires, or slicks?

Generally, from my experience, traction limited cars (i.e. street tires at the track) usually show little change in ET because the benefit of the higher gear is lost in the lack of improvement in 60 ft due to the traction limitation of the tire.

But if the car will never be on the highway, why would you not go with the higher gear ratio. It will be more fun to drive.