Yeah, the production numbers are all over the place on these cars. I think GM just started shoveling garbage out in '02 because they were fooling people into believing they were "collectible".
EDIT: My personal opinion is called the "blue hair" factor. Most of the TA's you see are driven by women, mainly old blue haired ones. (sorry TA fans, my wife also agrees.) They are less likely to mod and sell them where the camaros are purchased mostly by younger guys so they are more readily available in the for sale market.