A quasi-classical trajectory study of the OH + H-2 reaction has been performed on the potential energy surface (PES) proposed by Ochoa and Clary [J. Chem. Phys. 102 (1998) 9631] in order to assess its accuracy. A discussion of the accuracy of calculated rate coefficients and cross-sections has been already given in another Letter. In this Letter, detailed product vibrational distributions are analyzed and their relevance to the understanding of energy disposal mechanisms and to the evaluation of the accuracy of the proposed PESs are discussed. Indications on possible improvements of the PES to be adopted in the next iteration of the validation procedure are also given.