Mandiant ( NASDAQ:MNDT ) and Digital China ( OTCMKTS:DCHIF ) are both computer and technology companies, but which is the better business? We will contrast the two companies based on the strength of their profitability, institutional ownership, valuation, dividends, risk, analyst recommendations and earnings. Profitability Get Mandiant alerts: This table compares Mandiant and Digital China’s net margins, return on equity and return on assets. Net Margins Return on Equity Return on Assets Mandiant -30.46% -9.97% -2.10% Digital China N/A N/A N/A Insider and Institutional Ownership 80.1% of Mandiant shares are owned by institutional investors. 2.1% of Mandiant shares are owned…