Period BRK S&P
---------------------
1 4.8% -5.8%
3 38.8% 39.9%
5 67% 74%
10 237% 249%
15 292% 245%
After all the twists and turns, BRK still doing better over 15 years…
There! Fixed it for you, because 15 years is longer than 10…and I can cherry pick data too! 
Cheers!
Murph
(who notes that there is no one “right” way to invest; only the right way, given one’s specific financial circumstances, goals and risk tolerances)