the answer is Core Equity 4.5%, I think CCB is just buffer, but Tier1's core common equity is alwasy 4.5%
Tier 2 capital decrease from 4% to 2% to 2%
Total 8% 8% 10.5%
Tier1 4% 6% 8.5%
core 2% 4.5% 7%
when T1>=T2 at 8% level T1=4% T2=4%
but now T1=6% so T2=2% (decrease)
this just my guess, I double think at this point, but I couldn't persuade myself 4.5% has any problem
Tier 2 capital decrease from 4% to 2% to 2%
Total 8% 8% 10.5%
Tier1 4% 6% 8.5%
core 2% 4.5% 7%
when T1>=T2 at 8% level T1=4% T2=4%
but now T1=6% so T2=2% (decrease)
this just my guess, I double think at this point, but I couldn't persuade myself 4.5% has any problem