Jonas looked at the orb and couldn't help but feel a certain way deep down. He knew not to underestimate Grey, but the fact that Grey had always been above whatever way he evaluated him was a little crushing to him.
All geniuses had their pride, even with that pride he agreed that Grey was superior, but he didn't think the gap would be too large. Yet, Grey's performance was making him doubt himself.
Against this young man, he stood a chance, in fact, he was confident that he would win. However, against Grey that he was a stage above, he didn't even have the slightest bit of confidence.
Grey was very mysterious, and whenever he battles, he doesn't show signs of actually putting in all his effort, it was almost like he was holding back.
Take this attack Grey just used, for instance, the fact that Grey had that in his arsenal and had used it since he started battling was something else.