Are Men or Women Better Investors?

Here's a cute piece on data from SigFig which aggregated and anonymized (whatever that means!) 2.5 MILLION PORTFOLIOS  "Is your Valentine a better stock picker than you?" by Eric Cheni.
Total assets amounted to $350 billion, and the bottom line was women had a return of 4.7% and men had a return of 4.1%. The finding that women tend to perform better as investors is fairly consistent because they trade less and generally are more patient. Plus they don't have an exaggerated opinion of their investment prowess!

But what about the most patient, non-stock-picking approach of all?  Pull out again the BlackRock chart and find that, in 2014, the Diversified Portfolio achieved a return of 8.1%!  This portfolio is 35% Barclay's Aggregate Bond Index, 10% MSCI EAFE Index, 10% Russel 2000 Index, 22.5% Russell 1000 Growth Index, and 22.5% Russell 1000 Value Index.  This portfolio is easily replicated.  In fact, it could have been set up on 1/1/2014 and you could have enjoyed the rest of year leaving the stock picking and market timing to those with the big egos!