I totally agree. I was bullied heavily in school and a majority of the bullying came from boys (I'm a girl). The girls would only go as far as excluding me from things while the boys would say terrible things to my face, spread rumors about me, grab at me/hit at me etc., threaten me. Girls normally only go as far as being a little catty but boys don't really have a limit to how far they'll go when bullying someone.
Some boys bully worse than some girls and some girls bully worse than some boys. I was heavily bullied as a child by both boys and girls. Gender has nothing to do with a person's need to have a sense of power.