Owen Liddell suddenly found his mind extremely clear. The fatigue from lack of sleep was gone—or rather, it didn't matter when one was willing to work beyond one's current capacity.
He wasn't sure if this was the same for Han whenever he used his Psion Skill.
Most likely not. Owen was the one reaping the most from Han's skills right now.
The reason for that statement was because Owen received the superior version of a Skill from the ones he 'borrowed' it from. As for how it actually happened and why it worked that way when he was only supposed to receive the "other man's fortune" was due to him always being higher level than them.
In this world of theirs, the Classes helped distinguish people from another and so did one's levels. A lot of people identified with it and most introductions usually revolved around figuring out another person's Class or telling what was theirs.