Those are beautiful birds! Nice! My white crested red Polish roosters both had much larger red wattles by that age...but similar crests. Female Polish breeds tend to have full puffy crests, no visible comb and small wattles. Roos get a tiny V-shaped comb hidden under crest, it might not redden until 12 wks or so. However, the tails of both of yours appear more like pullet tails should present at that age....especially the one with longer, straighter tail. Pullets should have straight rounded upright tail feathers, no curved sickle or saddle feathers, only roos get those. I don’t see any obvious hackle feathers on necks yet either. I’m concerned that the one with smaller head crest ‘might’ be a cockerel. My Polish roos started crowing by 12-13 wks. Hope this helps!