John Bogle's never bought the idea that small caps outperform large caps over time, but his assertion is based on the removal from the 20th century a decade of particular small cap outperformance starting in 1973. Without it, he says, large caps have actually done better. Is this fair? What if we remove a decade of large cap dominance? In 2012, microcaps (IWC) have gained 15%, vs. 11.6% for the Russel 2000 (IWM), and 13.6% for the SPY.