XPO Logistics tries to be competitive in the marketplace but some roles do not pay as well as our competitors. Is compensation the most important factor for you when taking a new job?

It is important to pay close attention to how this question is phrased. They are not saying that they won't be able to pay you a fair wage. They've said some positions cannot pay as well as their competitors. The aim of this question is to assess what value you place on pay over other motivating factors for a fulfilling career. By offering your interviewer the other factors that are important to you when considering a new job, you could advertise your greater worth to the company. At the same time, it is important to not sell yourself short. Pay holds value for everyone. So best to neither advertise nor dismiss this point when answering this question. Simply focus on the other motivators aside from pay, and emphasizing that pay isn't the only thing that matters.