What is the competitve advantage between these two company ( Apple and Sony) for the past 3 years ?

Sony Profitability Tax Rate % Net Margin % Asset Turnover (Average) Return on Assets % Financial Leverage (Average) Return on Equity % Return on Invested Capital % Interest Coverage 2015-03 223.35 1.53 0.53 0.81 6.83 5.51 3.49 2.68 2016-03 2017-0:3 49.30 0.96 0.44 0.43 7.07 2.95 2.14 18.30 31.13 1.82 0.50 0.91 6.77 6.18 4.74 13.04