I have a request from a customer that I don't think is possible & having a hard time understanding

Can anyone help me with this

They want to know the difference between (2) designs, A - Steel Frame & B - Aluminum Frame

A Design calculated accuracy is: 1.8/1.5 Cp/Cpk; and after 200K cycles the estimated Cp/Cpk is 1.3/1.1…

B Design calculated accuracy is: 1.4/1.2 Cp/Cpk; and after 200K cycles the estimated Cp/Cpk is 1.0/0.9…

And so on…

Please help