notice it takes a little longer for vader to do a full force choke until someone is dead, the guy is struggling to breath a good few moments before they croke to death. Now when luke does that to the gueards they just fall over all fast. I am guessing they dropped for a nap.
By the way thats a cool spoiler about obi killing grievous, i am interested in seeing that now
I think that even the Jedi on the good side of the force have to use what is deemed an agressive move if they need to. What Luke did to the guards cannot be compared to how Vader choked that officer in ANH or when he killed the officer for failing him in ESB. The difference is Vader was intentionally seeking to cause pain, to actually inflict suffering or death. Luke was using it as a tool to remove a threat and didn't act as if he enjoyed doing it.
DarkSide Luke
Just as a point...I believe that in all the movies...Anakin's purpose was to set the force into balance...which would mean no more darkside and lightside...And it is obvious that Luke becomes part of the balancing of the force. Though both the DarkSide and Lightsides still exist, I think Luke has the ability to use both the Light and Darksides. Sometimes there are necessary evils... And I think that the Darkside is exactly that for Luke...a necessay evil when he needs it.
Balanced- no no no no, totally wrong, the oldest mistake in the book
Balance = good = Light Side = Jedi
Imbalance = evil = Dark Side = Sith
To bring Balance, you have to destroy the Sith- on NO account would bringing Balance involve using the Dark Side, as that is the source of the imbalance!
This is from GL himself.