No. But I’ve apparantly discussed it with more people than you have. Most notably, I spent some time trolling one of the popular law school internet forums.
You ask what evidence I have that other schools give an A+? I don’t need evidence–you can simply go on their website and look. Google grading policy and the name of any school and you should be able to pull up their curve. (Also, I’m sorry you never got an A+, but they are really really hard to get.)