We have not run on the same track on the same day...which is the only real way to know
We have competed in the same event with the Davidson car.
At the 2013 25hrs. of Thunderhill, we qualified 4th @ 1:46.2, the eagle was 3rd @1: 42.6. Qualifying is a real cluster with only 30 min, and over 60 cars of extremely disproportionate performance levels, (lots of Miatas) so a clean lap is hard to achieve, and not really relevant for a 25 hr. race.
In the race their best lap was a 1:44.1, while we turned a 1:44.7. we passed them on lap 1 & led the first few laps, then settled into our endurance pace, & let them go on. They completed 90 laps & retired early. we completed 505 laps & led overall more than 10 hrs, then retired with steering failure, with a 5 lap lead on second place.
I know Bob is serious about his race program, & it is a challenge & fun to race against them. I would imagine we could build several copies of our car, for what they have invested in theirs, how many is the question, but really none of our business, as we focus on our own program, as any race team should.