User blog comment:So-Pro Warrior/Special Sneak Preview of Season 2: Battle of the Ultimate Galaxy Savers: Master Chief vs. Commander Shepard/@comment-66.190.251.80-20130621012018

Master chief will take this.He dominates in X factors.While most of the guns are even in comparison Chief has better a better sniper rifle,battle rifle,lmg and smg.His armour will take more of a beating and he is basically superhuman.His training was harsher but that's icing on the cake.Master chief is the superior combatant.