No, I'm not talking of SEPA direct debit.
Do you pay your groceries with SEPA instant transfers?
Merchants can't just slap a QR code with their banking details on their website or cash registers. Wero offers a convenient layer on top of SEPA transfers, and you can argue EPC QR codes are already enough (though most people would disagree).
Additionally, Wero provides a full payment solution that's integrated with many third party processors, and is basically an evolution of Payconiq and iDEAL. Sure, it does use SEPA rails, but there's a lot more to it. And that's the part that will need to interoperate with more than a dozen mobile wallets in Europe, inside and outside the Eurozone.