well there is a big difference between 8 and 14 and you seem to be thinking of the first over the latter. So sure just debunk it, becouse you couldent handle strategic shooters at that age.
With games rating systems how they are, its pretty much either violence or nudity to get an M rating, I'm not talking about the actual maturity of the content, most games that come out with an M rating are pretty childish or silly, but when you look into it, warhammer is pretty silly, but also very violent, which means since the esrb does care so much about the maturity in a depth sense, it looks at it in a "how many people died on screen or bumped uglies on screen" sense, giving a Warhammer game a T rating would force then to remove almost all blood and viscera.