Eh, this could get both complicated and come off sounding whiny (by any one) the more Kharma gets explored and compared to "is life fair", which we all know it's not, it's just life.
The discussion could get even weirder still if we figure out, if we're getting Kharma now, saving it up for the next life, or living the Kharma now from the past one. So ... I think I'll forego the deep examination of it, lest we this thread become a tome.