Complex sentence: Ogier needed to out-score Neuville by just a single point to be declared the 2013 champion, which he achieved on the first stage of the rally, which in a break with tradition, was run as the event's power stage.
Split into simpler sentences: Ogier needed to out-score Neuville by just a single point to be declared the 2013 champion. He achieved on the first stage of the rally, which in a break with tradition, was run as the event's power stage.