Two growth ETFs, two distinct strategies -- see how cost, sector mix, and risk profiles set these funds apart for investors.The Vanguard Growth ETF (VUG 1.57%) stands out for its ultra-low fees, mega-cap focus, and stronger recent returns, while the iShares Russell 2000 Growth ETF (IWO 1.89%) offers diversified access to small-cap growth companies and greater sector balance.Both funds target U.S. growth stocks, but their approaches differ sharply: VUG tracks large, established growth companies, while IWO ze ...