GlyEco (OTCMKTS:GLYE) and Ener-Core (OTCMKTS:ENCR) are both small-cap business services companies, but which is the superior business? We will compare the two companies based on the strength of their valuation, dividends, institutional ownership, analyst recommendations, risk, profitability and earnings. Valuation & Earnings This table compares GlyEco and Ener-Core's top-line revenue, earnings per share (EPS) and [...]