The reactions between the two supers were wildly different, let's start with Doppler. 

Benny looked about the room and realized that they were surrounded by a wide array of men and women, all of them were looking at him. And he realized pretty quickly that his anticipation to show of his superpower was proving to be pretty negative. How did they know, how did they know, can they read his mind? Can they read it exactly? Do they know he was nervous because he's anxious to show off his power? Or do they just know that he's nervous. Internally he was panicking, had he already ruined his chances to join up?! "I uh, yes, private rooms, uh. Sure, I would uh. Yes, let's go do that. Please don't kill me?"

His words were punctuated with a nervous and admittedly shrill chuckle. And damn it, he nearly threw up his heart when Khold started talking behind him. Benny wasn't expecting to hear someone's voice nearby. "I uh, you sh- Eheh." If he weren't trying to very hard to keep himself calm, Doppler might actually have started crying right about now.

Meanwhile, One's reaction was pretty calm. And in fact, she was starting to get frustrated.

The woman at the desk didn't answer her question, she just pushed a button to alarm the guards around the room. Who had been tasked at a previous time to surround anyone who's intent was suspect. "Doppler isn't evil, main desk woman. But you should answer One's question, please? One asked you how you could be of service, and you didn't answer. Please tell One, how you can help her." It's not that One is oblivious, in fact, quite the opposite. Empaths and psionics can weed around in people's heads, just like her. Though she can't quite read minds, she can talk to people. And she knows how that feels because she observed the feeling in first person. They had taken a few looks at her and felt around inside of her head. 

This was evidenced by the empath's discomfort. Now, One didn't care that she was making the Empath uncomfortable. One had a question, and One wanted the answer. "Please tell One the answer to One's question?"