Oblique isolation with cable tension. The lateral leg raise matches the oblique's line of pull — the fibers run diagonally, and a side raise loads them through their natural contraction direction.
Oblique line of pull — the lateral raise direction matches the diagonal fiber orientation of the obliques.
Cable tension continuity — constant resistance through the lateral arc where bodyweight raises would lose tension at the top.
Incline position — adds range of motion compared to flat side raises and increases the stretch at the bottom.
Placed sixth to hit obliques after the front abdominal work.