The decision, however, is yet to be announced by the Guinness World Record
The giant wave surfed by french Benjamin Sanchis at Nazaré on December 11th launched some speculation that it could knock Garrett McNamara of the throne as the holder for the record of biggest wave ever surfed from Guinness World Records. However, the oficial position of the Guinness World Records is yet to be announced.
Here is the wave that got Benjamin the record, explained by himself.
The world record, held by McNamara was this wave.