Which Vanguard ETFs Have Beaten Warren Buffett's Favorite ETF Since Inception?

Only two Vanguard ETFs have outperformed Buffett's favorite ETF over the long run. Warren Buffett has dropped enough hints to ascertain that his favorite exchange-traded fund (ETF) is the Vanguard S&P 500 ETF (NYSEMKT: VOO). This ETF has been a huge winner historically, but which Vanguard ETFs have beaten Buffett's favorite ETF since inception?