This is the content:
1. GREEN LANTERN #21-25, GREEN LANTERN CORPS #14-19 and GREEN LANTERN: SINESTRO CORPS SPECIAL #1
2. The Tales of Sinestro Corps backups (Despotellis, Karu-Sil, Bedovian, Sinestro).
3. Green Lantern: Sinestro Corps Secret Files and Origins
4. Original Proposal by Geoff Johns 2pgs
5. Interviews and sketches
6. Figure/Toy gallery
7. New cover
NOT INCLUDED: Tales of the Sinestro Corps: Superman-Prime, Parallax, Ion, Cyborg Superman.
So, how about them apples? The most important tie-ins are not included. The Superman-Prime issue is not even a tie-in... is part of the story, and it was left out! Even when fans cried for this to be included months before release.
Don't be fooled! Sinestro Corps: Superman-Prime IS a crucial part of the story. First of all, without it, Superman Prime only comes up at the beginning of the story (remember... this is a heavy hitter character), seating in the moon doing nothing, and then you can see him again almost at the end with his suit torn apart. You don't get to see the HUGE fight with him versus virtually every single super-hero on the planet! Besides this, there is a pivotal moment on his fight with Sodam Yat too that explain why he, being the wielder of the power of Ion, still needs to wear a ring. THAT single event plays a VERY important part on the GL storyline later on.
But of course, some people think you don't need to see the event happening...
You might say "You don't need to see Superman-Prime's fight to get the story. He just fought with lots of people and that's it!", but I guess you might say that too about his fight with Superboy in Infinite Crisis. You know, just seeing Prime talking with Pa and Man Kent in Smallville, throw a punch to Superboy, and then cut right to the part in which the Flashes take him into the Speed-Force. Just ditch that entire issue and have someone saying "He fought with lots of people and killed a few".
Doesn't makes any sense!
I could have give it more stars because of the quality and presentation of the book, but honestly, at this point in time DC should know better. Mind you... THIS IS NOT A REVIEW ABOUT THE STORY. The story is fantastic. Maybe the best Green Lantern story ever told. This is a review about the edition, and the miss opportunity of doing it really Absolute.
Recommendation: If you already own the trades (plus Tales of S.C.), by all means, keep them. Nothing new here, plus is an incomplete compilation. No sense in you spending that much money for something you can get in a more complete fashion and for less.