Why squat and deadlift use different scales
Squat and deadlift are both lower-body-dominant lifts, but most lifters can move more weight in a deadlift than a squat at a comparable training stage, since the deadlift has a shorter range of motion and involves less technical balance and mobility demand at the bottom position. Because of that consistent gap, standard bodyweight-ratio benchmarks use a higher threshold scale for deadlift than for squat at every tier, rather than sharing one scale across both lifts.