Fun thing is how they are diferent.Kinda like>>12880331
Lelouch is more like doing the right things(not so extremist,at least not as much as Light) but he is doing it for wrong reasons that are not related to the good things he does(for hes sister,not the society).
Light is the other way,he really wants to make the world a better place but he had no limits and overated hes own judgement.
In a fight 1vs1 Lelouch wins unles Light can write the name faster,in the world Light would probably win.He would research and analyze Zero and find out who he is,then who he was and just write hes real name.
Zero/Lulu is smart and good in strategy and manipulation,but he is just not that smart at reading and understanding peoples actions like L or Light are.