From the legal point of view, it makes no difference whether the accused is a sitting or former head of state. But it makes an enormous practical difference that an incumbent ruler can do a lot more future damage to his people than an ex-ruler, and therefore should be given no incentive to retaliate.
逮捕令并不是向前的一大步。从法律的观点来看，被告是现任国家领导人还是卸任国家领导人并没有区别。然而在实际中两种情况大不相同：在任的统治者将来能给他的人民造成的伤害要远比卸任统治者严重，因此不应该刺激在任统治者采取报复行为。