Individual stock selection is a tricky task but just to give you an idea of what I mean
1) yield: on a blended forward 12 month dividend yield CBA makes an appearance in the 120s of the members of the All Ords
2) capital growth: since 22 April 2015, the big 4 banks have had shocking total returns (growth including dividends) relative to the index (at best -20% underperformance)
All Ords: +19.16%
CBA: - 4.04%
ANZ: -32.21%
NAB: -37.84%
WBC: -30.07%
Past performance is not an indicator of future performance but sure does give you an idea of how poorly these have performed and how well the rest of the index has done given financials make up 25% of the index.
Over the above same period BHP has done 51%, Woolworth has done 60%, Brambes has done 17% and CSL has done 260%