A host of Asian banks have had credit ratings lowered on hybrid capital instruments, Australian banks among them.ANZ, Bendigo and Adelaide Bank, CBA, Macquarie, NAB and Westpac all copped a whack on some instrument or other, covering a minority of hybrid capital securities.In general, 54 per cent of Asian bank hybrids saw lower ratings. The rating actions affected "54 per cent of Asia-Pacific banks' hybrid capital instruments and those banks' issuer credit ratings better position these hybrid ratings for the risk of increased loss-absorption, given regulatory and market trends," S&P said.There is "less notching for hybrid instruments issued by Asian banks," compared with the US and Europe, where more than 80 per cent of hybrids had ratings cut, said S&P.S&P concluded  that Asian (maybe including Australian) bank regulators, have been "less enthusiastic embracers of resolution concepts to date.""The relative riskiness of hybrid instruments--most particularly the risks of instruments bearing losses--is lower in jurisdictions in which key-resolution concepts, such as senior creditor bail-in, are less certain or proximate."