The '81 tax bill was reactionary. The '86 bill was not. I don't know which Bradley supported, tho the '86 bill was in the spirit of the tax reform he had been promoting.
The '86 bill lowered the top rate but it also broadened the tax base applicable to upper- income taxpayers. The result was probably not a net gain for progressivity, but the '81 bill was far worse in this respect.
mbs