Surprisingly, our hydrogen bond analysis in Figure reveals that the pairwise potential models have higher incidences of orientation defects, despite the faster relaxation time observed in the DPMD model. The average hydrogen bond lifetime in the SPC/Fw and TIP4P/ε models are 1.42 ps and 1.38 ps, respectively, while that in the DPMD model is 1.39 ps. Moreover, the order parameter in the DPMD model, q 4 = 0.678, is slightly higher that in the pairwise potentials, 0.639 for SPC/Fw and 0.649 for TIP4P/ε.