1997 Honda Prelude Oil Leak?

Small Stream Of Oil Leaking From Oil Pan, Gasket Is Bad, Can This Cause The Pistons Not To Be Lubricated Correctly Causing It Not To Run At Full Potential? Reason For Asking Because Im Thinking About Buying The Car. The Guy Said Ask Any Mechanic, The Leaking Of Oil Is Not Allowing Pistons To Be Lubricated Correctly.