My teacher told me superoxide and peroxide anion are more basic than hydroxide but according to Wikipedia
Given that the hydroperoxyl radical has a pKa of around 4.8
and and pKa of H2O is
Acidity (pKa) 13.995[b]
Therefore, basicity of superoxide anion should be lesser than hydroxide as hydroperoxyl radical is more acidic than water.
For hydrogen peroxide I am not able to find pKa for both the hydrogen as it has two hydrogen so I don't know how to compare it, and I am not able to find the data of pKb of radical directly.