The ESAS launch safety estimates for the Ares were based on the Space Shuttle, despite the differences, but included only launches after Challenger, and counted each of the remaining launches as two safe launches of the Ares booster.
For the Ares were based on the Space Shuttle. This was despite the differences. This is what the ESAS launch safety estimates. For the Ares were counted each of the remaining launches as two safe launches of the Ares booster. This is what the ESAS launch safety estimates.