It is never 100. Completion is a myth sold to project managers. 100 implies perfection, a closed loop, a finished object. But 90... 90 is the threshold of no return. 90 is the moment the rocket has cleared the tower. 90 is when the version is no longer backward compatible.
The 90-degree maneuver requires high peak torque during Phase II but reduces the total number of actuator movements. $$ E_{total} = \int P(t) dt $$ While peak power $P_{peak}$ is higher, the time integral $dt$ is significantly lower, making the Upseedage approximately 30% more energy-efficient than a full supine recovery. nao upseedage 90