Is the following statement true or false? The single-phase, single-channel model with Poisson arrivals and undefined service times will always have larger (i.e., greater) operating characteristic...

Is the following statement true or false? The single-phase, single-channel model with Poisson arrivals and undefined service times will always have larger (i.e., greater) operating characteristic values (i.e.,
W,
Wq,
L,
Lq) than the same model with exponentially distributed service times. Explain your answer.