A: I suppose productivity is the most important criterion for measuring staff performance. Productivity refers to the measured ability to grow things or the rate of making profits. In that sense, if an employee fails to makes profit for the company, he or she is not considered to be a good staff.
B: I don’t think productivity is the most important criterion for measuring staff performance. Instead, I think achievement is the most important criterion for measuring staff performance. He, who has completed his demanding tasks successfully or made great achievements, be it material or nonmaterial, through skill and hard work, should be regarded as a good staff.