There is not enough contact between your pads and the rotor. Look at the pic of the other rotor that was posted. You can see how much contact area there is compared to yours. Almost half of your rotor is not in contact with your brake pads. If it was the rust would have come off in one day of driving. Or one hour here in L.A.
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Also I never jack the car up where you did, wood or not. The metal around the jack points is not any thicker than other parts of the car and can collapse the rocker panels. I always jack the car from the sub frame just a couple inches inboard of where you have your jack. The same place that white jack stand is placed in the other picture. Solid steel.
Thanks for the post & pics.
