Super pi between AMD and intel should never be compared.
Scientia disassembled superpi around 6 months ago to see why intel could run it so much faster than an otherwise equivalent AMD processor.
It turns out that it uses mainly x87 instructions so it has nothing (or very little) to do with cache at all.
It shouldn't be used as a benchmark comparison and neither should cinebench. They are both toys.
After saying that, those runs that coolaler did showed that Shanghai was a little over 20% faster than Barcelona at the same clock.

qurious63ss Thanks for those links my old memory was recalling the actual launch.
Thank god the old marketing team are now sweeping floors at the local supermarket. (hopefully)