User blog comment:Bluegear93/Mass Effect 3's ending, something came to my mind./@comment-4237253-20120522040705/@comment-1900300-20120522222822

Acutally thats the issue isnt it?

The Cataylist dose more to save the day then Shepard.

He literally appears and says "do this to end the game" out of charaity to us. Shepard has no power in this context. He cannot challenge the Cataylsit, suggest a new option or ask for elabroation. It is the Cataylsit driving the plot in thew final few mins, through means and technology that are in no way explained or make any sense, boiling down to magic. A god appearing and asking the hero if her wants his enemies blown up or strangled to death is still a deus ex machina, no matter which of the choices the hero picks.