Say you and your friend both own the exact same Dodge Ram pick-up truck, but one of you uses it to tow a boat to the lake and the other uses it for mostly inner-city commuting. You’re going to have drastically different MPGs, but it isn’t due to the vehicle, it’s because of the way it was driven. While you have the same vehicle (technology) the goals and objectives are much different (outcomes).
You can apply the same thought to recruitment advertising. Employers have vastly varying recruitment needs from the hard-to-fill nature of high-tech and medical science to the high volume hiring of retail, service workers and warehouse employees.