 Hancock Jaffe Laboratories NASDAQ:HJLI and ABIOMED NASDAQ:ABMD are both medical companies, but which is the superior business? We will compare the two businesses based on the strength of their profitability, dividends, institutional ownership, analyst recommendations, valuation, earnings and risk. Profitability This table compares Hancock Jaffe Laboratories and ABIOMEDs net margins, return on equity and return ... 