I completely agree. But if they use a different feedstock in the pyrolysis process, the output materials will probably be different.
Per the links which Goosemeister and Eelfland posted about Mr. Rivera at GWE six to eight years ago, it sounds like Mr. Rivera also tried used tires and manure and didn't get anywhere. It can't get much cheaper than that. Doing a web search, it looks like other people are also trying without too much success. BTG has the whole process on their website. The U.S. Department of Energy also has a piece on pyrolysis ( http://www1.eere.energy.gov/biomass/pyrolysis.html ) saying that many companies tried to go commercial during the nineties and reached 'near-commercial' status. That's another way of saying, "not quite profitable."
If Mr. Rivera has anything which gives him an edge, secret catalyst or whatever, he certainly doesn't seem willing to prove its value in any shape or form. Although somehow he appears have become a multi-millionaire while unsuccessfully trying to get his process to market.
Per WSR..page 30 Cost of raw materials: The model assumes corn costs $2.00 per bushel and soy bean costs $9.00 per bushel—50% mixture results in a cost of $5.50 per bushel.