Comment on "Horizon area- Angular momentum inequality for a class of   axially symmetric black holes" [arXiv:1012.2413]
  We extend the results presented by Ace\~na \textit{et al} in the afore mentioned paper, [arXiv:1012.2413], to the case of axisymmetric, maximal initial data which are invariant under an inversion transformation. 
Mar/'ia E. Gabach Clement
gr-qc