They're both very dark and have dark washes down the legs. The second one looks like it's got a big white spot on the back of the head. But my guess would be pullets, too.
I'm new to this, so my only 'expertise' here is the *large number* of BR sexing posts I've perused here while trying to make up my mind about my own BR. There's lots if you use the search function to search for those kinds of posts (if you haven't already!).