Hadron spectrum in quenched lattice QCD and quark potential models

We show that the quenched lattice QCD gives a hadron spectrum which remarkably agrees with that of quark potential models for quark mass mq ≥ mstrange, even when one uses the standard one-plaquette gauge action. This is contrary to what is stated in the literature. We clarify the reason of the discrepancy, paying close attention to systematic errors in numerical calculations. (orig.)