I Know But I Prefer Using This As The Decent Engine Because I Like To Land On The Moon Quick And It Is Safer To Abort Landings In Case Something Goes Wrong Also The Broadsword Would Leave Lots Of Fuel I Usually Land On The Moon With 1/3 Of The Tank Full And I Use That To Help Me Refuel The Assent Stage Modules RCS Thrusters And Also If I Have More Fuel Than Expected I Can Reuse It