Fixed Income Manager Return Evaluation

When evalutaing a fixed income managers return, if they state for instance that they specialize in security selection and the security selection return is .12 with a total return of .95. Would you say that it validates their stated objective? I see on some tests where they say that no .12 is not generating enough of the total return and others which say yes it is a positive portion of the return. Which is correct and how much of a return is correct?