Funny, I don't consider any of those weights to be unrealistic for a contest ready fitness physique of those heights. Think about bodybuilding competitors.....heavy weight categories start at 57 kg, and I'm 5'5" and have always managed to weigh in less than that (though I carb up to more than that by judgement day).
Of course, in the "off" season, when fully hydrated and with a little fat on them, you bet your boots they weigh more than that.