Be careful to don't mix the torque require for the rotor (90% with 3 engine will remind 90%, same power and same rpm) and the torque seen by the engine (90% for each engine and the 3:2 rules work)
The two remaining engines(and MGB entries) will see 135% torque.
Keep in mind that AEO torque limitation is to protect planetary and OEI limitation is to protect MGB engine entries.