actually mtech doesn't lie, you just have to pay attention to what they say. for example, the nitro-tech claim. it's 100% true, but what they forget to mention is that nitro-tech has creatine in it.
the biggest one mtech uses heavily is the "ingredients used in whatever have done whatever". they cite a study on the ingredients in a product and its effectiveness, not the product itself. for example, they'll cite a study on ephedra or yohimbe and then hock hydroxycut. except that doesn't mean that the amounts in the product are effective, just the ingredients.
a lot of sleight of hand trickery, but no lying.