What is funny in Japan that woman can screw young kids and it's only a misdemeanor charge. It's a very sexist law. Men, would get forced labor for a minimum of 20 years. It's crazy stuff how some countries run their stuff.
That'd be an extreme example in a western country. But, here in the US, you're definitely treated more harshly as a male sex offender than a female one. So, I don't think it is fair to say "...some countries..." I think just about all countries have unfair, ridiculous laws.