Norm of asset

A = L + E
Is differential between optimal ROA & ROE should be 1:2, or not?
Why 's D/E ratio would be 2:1? Y Y Y Y Cause Low Debt is High Stability. Y?
M5 may absolute way of all solution?
384 lb.ft of torque.
500 Hp when full power.
400 Hp when economy setting.

High risk came with High Return but I am not Hero please follow Other.