Well if you call being skeptical of the claim "if you can afford a Crossfire and cannot afford this?" Negative...then I guess in your limited way of thinking...I would be...

If you race cars even half of what you try to brag about you see these type of "miracle" mod's all the time. Nice thing about a using a scientific method to this is that with unbiased, reputable data and only a very limited number of possible variables, one can prove or disprove almost any claim...