1- FOV (Field of View): Those on high ground have the best FOV , it being limited only by direct interference with it (say a wall , a rock etc) otherwise they can see everything since it's obviously lower, while those on low ground have their FOV limited to same heigth.

2 - Cover: Higher ground will always offer at least partial cover as soon as those on it go prone it will also limit the effectiveness of cover used by those on lower because of that little FOV.

And lots more but that's the basics ...

As for Lightsabers:

1 - Fighting against gravity : if you attack higher ground , you have to fight gravity , a small advantage but every bit counts.

2- Less exposure : When you're on high ground you are only vulnerable Midsection-down to a slash. It's always easier and faster to pivot or jump than to dodge or roll.

My 2 cents on EP III's attack: Anakin is enraged by obi-wan's statement and he TRIES to take the higher ground to prove his "might". Problem is while you jump you can't parry (Usually , unless its a mcgyver movie or such lol).

As for The EP I vs EP III battle , EP 3 >>>> EP I. Think about it, on the whole. EP I: Two jedi have to seek the aid of a semi-retarded, easily scared native to find a boy that defeats a whole Battleship on his own. Nevermind the battle scene (It is pretty cool I agree). Compare it to EP III's plot. GGs lol

Anyway, all the above are oppinions, please challenge them and let's stir some reactions : D .

lol episode 1 era? Shouldn't it basically be along with the Clone Wars era? I mean they're so close to each other it really makes no difference. Well, nm actually its not just make episode 1 its own era. btw,Jar Jar is the faggiest character of Star Wars ever! What was his point in the movies anyway? To be "mesa" faggot and annoying?

Well IMHO, Jar Jar was a good character for Star Wars, some don't like him/her, but he/she is clumsy and just some extra touch, he/she was the person to bring our heros to the gungans and also to bring the gungans and the naboo together

and about thos eras, Episode I till III is just one era, Episode I was just the start of the Clone Wars

maybe, but it doesn't follow the rule

Obi-Wan never follows the rules he's like Qui-Gon