First is the worst, second is the best, third is the one with the hairy chest... NERA Economic Consulting released a study focusing on the performance of structured finance ratings causing a varied response from all three ratings agencies. Standard & Poor's believes the study says its service is the first to recognize changes in credit quality, while Moody's Investors Service thinks the study confirms there are substantial differences among the ratings systems. Fitch Ratings says the study shows the differences in the ratings are small.