Can we chalk it up to the typical response: «Oh, boys take longer to potty train than girls do»? (care.com)
~ Toddlers are ready to be potty trained around 18 months of age ~ Boys are easier to potty train than girls ~ Girls are easier to potty train that boys ~ You should not use a potty, but rather use the toilet straight away ~ You should make your toddler to sit on the potty for practice (toddler-activities-at-home.com)
In my experience, boys are easier to potty train than girls. (thenaturalmommy.com)