Efforts to continue with measures of internationally comparable capital ratios remain a feature of big bank profit reporting, with Commonwealth Bank, producing an estimate compiled using an alternative method to the one often relied on in the past.The Group's core, or CET1, capital ratio "as measured on an internationally comparable basis" was 14.3 per cent as at 31 December 2015, placing it amongst the top quartile of international peer banks.CBA benchmarked its comparison against a late 2015 APRA study that helps put to rest controversies over much criticised studies championed in recent years by big banks.The Group's CET1 ratio measured on the most relevant, local APRA basis was 10.2 per cent at 31 December 2015, "representing a 110 basis point increase from the 30 June 2015 level of 9.1 per cent," even after selling more than A$5 billion in new capital during the year.