You'll never win following the rules. Every board is different. Just because there is a list of some common cambers and rockers doesn't mean they all ride the same. And different companies have different ideas of what their cambers are.
When you know how to ride, you can adjust to any board fairly easily. You're blaming equipment for your own shortcomings and taking offense when others try to point it out. You will do what you want, of course, but being defensive is not going to help you handle your board better. You've been given a good advice: learn to ride, take lessons.