If you wanna know the real reason it's because Arizona has an absolutely huge amount of Cowboys fans, I think it might be the second largest fan base outside of Dallas for them. The Cards have a horrible fanbase as they only drew about 29,000 people in a 73,000 seat stadium in 2002-2003, and all their franchise attendance records have been set at games vs the Cowboys. Last year they averaged almost 37,000 people per game so he is having a small effect, and as they don't seem to be a powerhouse this season they can use all the revenue they can get as they are one of the least profitable franchises in the NFL.