Traditional bond analysts differ greatly from loan analysts. The latter focus mainly on the quality performance of individual loans. Thus, in depth research of individuals or individual companies are conducted. However, for a portfolio manager, his job isn't focusing on the due diligence of the individual companies (they often outsource that to the rating agencies), rather, they use mathematical equations to calculate the likelihood of the performance of such bond compare to other instruments. Which means in sum, the loan officer who are prudent in picking the better performing bond would have higher margin of safty than a bond profolio manager, since the ladder cares more about a group of securities not hand picking individual ones.