I... actually just read it as character hype.  I didn't interpret it as Karn being any more or less powerful than any other student.  It certainly does seem Karn is pretty formidable, but I didn't think of it as him being better than any of the students unless specifically mentioned that they lack skills.<br/><br/>What I do expect though is that teachers flat out win.  I mean, they're teachers.  So long as it holds true that teachers decisively win, I'm fine.