Based on its 2013 track record, Goldman Sachs' trade recommendations confirm the obvious: The firm is goodbut maybe not as good as everyone thinks.

An analysis by The Wall Street Journal took a look at Goldman's top trades of the year, which the paper notes would have returned 5.1 percent over the last year. That is a big mark-up from previous years, the Journal reported, as Goldman's recommendations returned 1.6 percent in 2012 and a paltry 0.3 percent the previous year.