it's a little hard to tell/too early to tell from the pics you've posted. what you want though when you see pre-flowers are these two "hairs" coming out like I've posted. these are clones in my propagator with female pre-flowers. single hairs=male, two hairs=female
I would say too early to tell. if you want a definitive answer before wasting time vegging questionable plants then I would take a cutting from each plant in question and put it under 12/12 lighting. this will induce flowering on the little cutting and reveal its sex to you.