They also score criticals nearly twice as often (before paragon at least) and like a barbarian, you are encouraged to wield a two handed weapon (since you have no off hand attacks, no need for an implement you need to hold in your hand, and you don't want a shield), and with the increased accuracy of the extra rolls you can afford to take the extra damage at the cost of it being 'only' +2 proficiency. Two handed weapon + increased accuracy combine to make for striker damage output, and occaisionally you'll get a bit more damage (although it will more often discourage enemies from disrespecting your censure more than giving you extra damage).