Comment on “The role of the orbital angular momentum in the proton spin” by M. Wakamatsu A. W. Thomas, H. H. Matevosyan and A. Casey Eur. Phys. J. A, 46 2 (2010) 325-326 Published online: 25 September 2010 DOI: 10.1140/epja/i2010-11035-8