How about what makes them DIFFERENT? And don't just say HxH is better. That's obvious.
Example:
Chuunin Exam and Hunter Exam
Seem similar don't they:
difficulty finding the hunter exam=genjutsu trick in finding the chuunin exam
Trick Tower=Written Exam
Zevil Island=Forest of Death
Final Exams are both Tournaments.
3 Man Team + Kabuto= Gon, Kurapika and Leorio+ Killua
Orochimaru=Hisoka
But then...
The Differences
-Chuunin Exam did not have a marathon and a cooking exam.
-Final exams are quite different as HxH's the LOSER is the one who advances
-Final exam in HxH is anticlimatic. Final exam in Naruto is the start of a war
-There was no war in HxH---which the Chuunin Exam was just set up for
-Final Exam in Naruto is a no holds barred contest. Final Exam in HxH is a test of willpower
-No teams required in Zevil Island. Teamwork is required through the entire chuunin exam minus the last exam
-The entire purpose of each example is utterly different. I'll explain:
The purpose of the Hunter Exam is as far as I understand it to issue the Hunter's License to qualified candidates.
The point of doing this is that Hunters do jobs for the Hunter Association and the Hunter Association gets commission.
The point of the Chuunin Exam is a substitute for war. The exam dwindles down to the "best of the best"
and has them fight in the Final Exam where Feudal Lords watch them. This gives investors a chance to see
which nations have the strongest fighters. The ones with the strongest fighters naturally get the most money.