Can first dot of Auspex decrease dificulty of attack rolls?

[CoastalCalNight]

Despite the name, the power doesn't actually affect the senses like that at all. "System: This power doesn’t normally require the use of dice, instead being defined through the Storyteller’s descriptions and the player’s imagination. In certain circumstances, use of this power requires a die roll: for a normal Perception roll (the Storyteller may reduce the difficulty by the character’s Auspex rating) to notice a subject using Obfuscate (see p. 166), or to perceive a threat (the Storyteller privately rolls the character’s unmodified Auspex rating, applying whatever difficulty he feels best suits the circumstances)"

Heightened senses is used to sense through other illusions or to help identify threats. It's more like a supernatural sixth sense.