I believe things based on evidence, and doubt them if there is no evidence or counterevidence.
But since, by your own admission, you did very well academically at university, I'm struggling to understand what you're trying to say. It seems to me your SAT results were indeed a very good predictor of your academic potential and this is a good argument to keep the SAT and possibly increase its weighting.
I was mostly referring to your opinions of my math ability.
The truth is that I was just good at taking tests. Some people are not good at taking tests. Not reflective of knowledge or skill. I know enough truly bright people to know that my test scores were....generous.
No, that isn't the truth. If that were the truth, then test results wouldn't correlate with anything meaningful, but they do, and a test is often the best single predictor of performance. That's why universities in America use the SAT and weight it heavily. That's why it is totally unsurprising that, having done well on the SATs you also did well at university.
In fact, it's quite an insult to test designers for you to imagine their tests measure nothing but 'test taking ability'. I can only imagine your statement is not meant to be a malicious dismissal, but merely reflects your nearly wholesale statistical and psychometric ignorance.