I can't check at the moment, but assume you mean that there are no decent prizes for people voting in the Autavia cup. My take on that would be, that by having a big prize (say a watch), the quality of the voting would be reduced. By that I mean that thousands and thousands of people would be voting (the type of people who enter everything), and that would dilute the quality of the "market research".

If I was them, then I would only want potential customers to vote, and I think they will vote anyway whether a prize is up for grabs or not.