Well, I would know how I would judge. I suspect you would as well. Are you seriously suggesting Miers didn't know that too?
No you don't - not unless you violated your judicial obligations and oath and made up your mind on a case ahead of time.
Judicial decisions are made on a case by case basis. In some case, depending on the applicable state laws, a decision friendly to abortion would be the proper one. Parental notification laws are good examples of this.