You do not understand how licensing works, we are not reseling the product we are using it and seling art. If we were to sell the product we got to use under licence itself that would require commercal licence. If we tried to trademark the product we got a licence to use that would not be allowed. Let me explain it this way, if we bought tires for a car to use, and tried selling them instead that would not be legal. But if we put the tires on a car and sell the car that is legal. Do you understand now. You are wrong. Simply.
You have compared two different things that don't have any kind of connection regarding the industry or the license... sorry but that its very naive
You are wrong. Simply because you don't understand 1. Standard license and 2.Commercial license
1.Standard license - personal use - you have "bought it" ( but i know you've downloaded illegally anyway) and you can use it for personal work that's OK and someone has sell it to you and gives you permission to put in in your artwork NOT Resell it to someone else as your own work!!
2. Commercial use - which probably you don't have rights ( costs over 250$)
Thanks and i hope you win this contest
Dear CONTEST HOLDER using stock vector images is forbidden on this site please pay attention on the designs that are using those stock images as you might have copyright issues with this all the top ARE USING STOCK IMAGES FOR MOTORCYCLE
FOR EXAMPLE HERE'S THE DESIGN WITH STOCK IMAGE --- > http://www.istockphoto.com/vector/jumping-dirtbike-silhouette-6945533?st=924647f