Interesting, great to have that 'confirmed'.
Can't imagine there are that many people out there with the super premium cards - surely not worth it paying so much on every transaction, just so you can possibly pay less on a few transactions?
Hah. Haha. You do realise banks have been deliberately upgrading everyone under the sun to "Platinum" (and higher) whenever they can get away with it? Those are all Premium cards, with around 1.90% interchange.