Permissibility Of Equivocality And Lies [Tawriah (Double Entendre)]
Their natures are different. For example, if one tells a truth still one may misconceive it. The result will be the same: misleading, but the nature of the statement is different.
legal matters belonging to trade and sale and purchase, for example. The example you mentioned entails unethical stuff. Therefore it is unethical. Tawriah is not about something unethical, it is just to avoid an undesirable situation.